[2.x] Drop PHP 8.1 support

[WyriHaximus]

No description provided.

[github-actions]

🏰 Composer Production Dependency changes 🏰

Prod Packages	Operation	Base	Target	Link
lcobucci/clock	Upgraded	3.0.0	3.3.1	Compare
react/promise	Upgraded	v2.11.0	v3.2.0	Compare
wyrihaximus/metrics	Upgraded	2.1.0	3.0.0	Compare
php	Changed	^8.1	^8.3
react-parallel/object-proxy-attributes	Removed	1.1.0	-	Compare
thecodingmachine/safe	Removed	v2.5.0	-	Compare
wyrihaximus/constants	Removed	1.6.0	-	Compare

[github-actions]

🚧 Composer Development Dependency changes 🚧

Dev Packages	Operation	Base	Target	Link
azjezz/psl	Upgraded	2.9.1	3.3.0	Compare
colinodell/json5	Upgraded	v2.3.0	v3.0.0	Compare
composer-unused/symbol-parser	Upgraded	0.2.5	0.3.1	Compare
composer/ca-bundle	Upgraded	1.5.5	1.5.7	Compare
composer/class-map-generator	Upgraded	1.6.0	1.6.1	Compare
composer/composer	Upgraded	2.8.5	2.8.9	Compare
composer/semver	Downgraded	3.4.3	3.3.2	Compare
composer/spdx-licenses	Upgraded	1.5.8	1.5.9	Compare
doctrine/coding-standard	Upgraded	12.0.0	13.0.1	Compare
ecoapm/libyear	New	-	2.3.0	Compare
ergebnis/composer-normalize	Upgraded	2.45.0	2.47.0	Compare
ergebnis/json-normalizer	Upgraded	4.8.0	4.9.0	Compare
ergebnis/phpstan-rules	Upgraded	2.5.2	2.8.0	Compare
ergebnis/phpunit-slow-test-detector	New	-	2.19.1	Compare
fidry/cpu-core-counter	Upgraded	0.4.1	1.2.0	Compare
guzzlehttp/guzzle	Downgraded	7.9.2	7.5.0	Compare
guzzlehttp/promises	Downgraded	2.0.4	1.5.3	Compare
guzzlehttp/psr7	Upgraded	2.7.0	2.7.1	Compare
hamcrest/hamcrest-php	New	-	v2.1.1	Compare
icanhazstring/composer-unused	Upgraded	0.8.11	0.9.3	Compare
infection/infection	Upgraded	0.26.21	0.29.14	Compare
infection/mutator	New	-	0.4.1	Compare
jetbrains/phpstorm-stubs	Upgraded	v2023.3	v2024.3	Compare
justinrainbow/json-schema	Upgraded	5.3.0	6.4.1	Compare
maglnet/composer-require-checker	Upgraded	4.7.1	4.16.1	Compare
marc-mabe/php-enum	New	-	v4.7.1	Compare
mockery/mockery	New	-	1.6.12	Compare
myclabs/deep-copy	Upgraded	1.12.1	1.13.1	Compare
nette/utils	Upgraded	v3.2.10	v4.0.6	Compare
nikic/php-parser	Upgraded	v4.19.4	v5.4.0	Compare
nikolaposa/version	Upgraded	4.2.0	4.2.1	Compare
ocramius/package-versions	Upgraded	2.9.0	2.10.0	Compare
php-coveralls/php-coveralls	Upgraded	v2.7.0	v2.8.0	Compare
phpstan/extension-installer	New	-	1.4.3	Compare
phpstan/phpdoc-parser	Upgraded	1.33.0	2.1.0	Compare
phpstan/phpstan	Upgraded	1.12.17	2.1.17	Compare
phpstan/phpstan-deprecation-rules	Upgraded	1.2.1	2.0.3	Compare
phpstan/phpstan-mockery	New	-	2.0.0	Compare
phpstan/phpstan-phpunit	Upgraded	1.4.2	2.0.6	Compare
phpstan/phpstan-strict-rules	Upgraded	1.6.2	2.0.4	Compare
phpunit/php-code-coverage	Upgraded	9.2.32	12.3.0	Compare
phpunit/php-file-iterator	Upgraded	3.0.6	6.0.0	Compare
phpunit/php-invoker	Upgraded	3.1.1	6.0.0	Compare
phpunit/php-text-template	Upgraded	2.0.4	5.0.0	Compare
phpunit/php-timer	Upgraded	5.0.3	8.0.0	Compare
phpunit/phpunit	Upgraded	9.6.22	12.1.6	Compare
rector/rector	New	-	2.0.16	Compare
revolt/event-loop	Upgraded	v1.0.6	v1.0.7	Compare
roave/backward-compatibility-check	Upgraded	7.4.0	8.13.0	Compare
roave/better-reflection	Upgraded	6.25.0	6.59.0	Compare
sanmai/later	Upgraded	0.1.4	0.1.7	Compare
sanmai/pipeline	Upgraded	6.12	6.14	Compare
sebastian/cli-parser	Upgraded	1.0.2	4.0.0	Compare
sebastian/comparator	Upgraded	4.0.8	7.0.1	Compare
sebastian/complexity	Upgraded	2.0.3	5.0.0	Compare
sebastian/diff	Upgraded	4.0.6	7.0.0	Compare
sebastian/environment	Upgraded	5.1.5	8.0.2	Compare
sebastian/exporter	Upgraded	4.0.6	7.0.0	Compare
sebastian/global-state	Upgraded	5.0.7	8.0.0	Compare
sebastian/lines-of-code	Upgraded	1.0.4	4.0.0	Compare
sebastian/object-enumerator	Upgraded	4.0.4	7.0.0	Compare
sebastian/object-reflector	Upgraded	2.0.4	5.0.0	Compare
sebastian/recursion-context	Upgraded	4.0.5	7.0.0	Compare
sebastian/type	Upgraded	3.2.1	6.0.2	Compare
sebastian/version	Upgraded	3.0.2	6.0.0	Compare
shipmonk/dead-code-detector	New	-	0.12.2	Compare
shipmonk/phpstan-rules	New	-	4.1.4	Compare
slevomat/coding-standard	Upgraded	8.15.0	8.18.1	Compare
squizlabs/php_codesniffer	Upgraded	3.11.3	3.13.0	Compare
staabm/phpstan-psr3	New	-	1.0.3	Compare
staabm/side-effects-detector	New	-	1.0.5	Compare
symfony/config	Upgraded	v6.4.14	v7.3.0	Compare
symfony/console	Upgraded	v6.4.17	v7.3.0	Compare
symfony/dependency-injection	Upgraded	v6.4.16	v7.3.0	Compare
symfony/deprecation-contracts	Upgraded	v3.5.1	v3.6.0	Compare
symfony/filesystem	Upgraded	v6.4.13	v7.3.0	Compare
symfony/finder	Upgraded	v6.4.17	v7.3.0	Compare
symfony/polyfill-ctype	Upgraded	v1.31.0	v1.32.0	Compare
symfony/polyfill-intl-grapheme	Upgraded	v1.31.0	v1.32.0	Compare
symfony/polyfill-intl-normalizer	Upgraded	v1.31.0	v1.32.0	Compare
symfony/polyfill-mbstring	Upgraded	v1.31.0	v1.32.0	Compare
symfony/polyfill-php73	Upgraded	v1.31.0	v1.32.0	Compare
symfony/polyfill-php80	Upgraded	v1.31.0	v1.32.0	Compare
symfony/polyfill-php81	Upgraded	v1.31.0	v1.32.0	Compare
symfony/process	Upgraded	v6.4.15	v7.3.0	Compare
symfony/property-access	Upgraded	v6.4.18	v7.3.0	Compare
symfony/property-info	Upgraded	v6.4.18	v7.3.0	Compare
symfony/serializer	Upgraded	v6.4.18	v7.3.0	Compare
symfony/service-contracts	Upgraded	v3.5.1	v3.6.0	Compare
symfony/stopwatch	Upgraded	v6.4.13	v7.3.0	Compare
symfony/string	Upgraded	v6.4.15	v7.3.0	Compare
symfony/type-info	New	-	v7.3.0	Compare
symfony/var-exporter	Upgraded	v6.4.13	v7.3.0	Compare
symfony/yaml	Upgraded	v6.4.18	v7.3.0	Compare
thecodingmachine/safe	New	-	v3.3.0	Compare
tomasvotruba/type-coverage	New	-	2.0.2	Compare
wp-cli/php-cli-tools	New	-	v0.11.16	Compare
wyrihaximus/async-test-utilities	Upgraded	5.0.25	9.3.0	Compare
wyrihaximus/coding-standard	Upgraded	2.14.0	2.18.2	Compare
wyrihaximus/makefiles	New	-	0.4.2	Compare
wyrihaximus/phpstan-react	New	-	2.0.0	Compare
wyrihaximus/phpstan-rules-wrapper	Upgraded	2.15.0	10.13.0	Compare
wyrihaximus/react-phpunit-run-tests-in-fiber	New	-	3.0.0	Compare
wyrihaximus/test-utilities	Upgraded	5.2.4	7.4.0	Compare
yamadashy/phpstan-friendly-formatter	New	-	v1.2.0	Compare
amphp/amp	Removed	v2.6.4	-	Compare
amphp/byte-stream	Removed	v1.8.2	-	Compare
clue/block-react	Removed	v1.5.0	-	Compare
dnoegel/php-xdg-base-dir	Removed	v0.1.1	-	Compare
doctrine/deprecations	Removed	1.1.4	-	Compare
doctrine/instantiator	Removed	2.0.0	-	Compare
felixfbecker/advanced-json-rpc	Removed	v3.2.1	-	Compare
felixfbecker/language-server-protocol	Removed	v1.5.3	-	Compare
filp/whoops	Removed	2.17.0	-	Compare
jakobbuis/simple-slow-test-reporter	Removed	v1.0.0	-	Compare
jangregor/phpstan-prophecy	Removed	1.0.2	-	Compare
netresearch/jsonmapper	Removed	v4.5.0	-	Compare
nunomaduro/collision	Removed	v6.4.0	-	Compare
orklah/psalm-insane-comparison	Removed	v2.4.0	-	Compare
pepakriz/phpstan-exception-rules	Removed	v0.12.0	-	Compare
php-standard-library/psalm-plugin	Removed	1.1.5	-	Compare
phpdocumentor/reflection-common	Removed	2.2.0	-	Compare
phpdocumentor/reflection-docblock	Removed	5.6.1	-	Compare
phpdocumentor/type-resolver	Removed	1.10.0	-	Compare
phpspec/prophecy	Removed	v1.20.0	-	Compare
phpspec/prophecy-phpunit	Removed	v2.3.0	-	Compare
phpstan/phpstan-php-parser	Removed	1.1.0	-	Compare
psalm/plugin-phpunit	Removed	0.18.4	-	Compare
roave/infection-static-analysis-plugin	Removed	1.31.0	-	Compare
roave/signature	Removed	1.8.0	-	Compare
sebastian/code-unit	Removed	1.0.8	-	Compare
sebastian/code-unit-reverse-lookup	Removed	2.0.3	-	Compare
sebastian/resource-operations	Removed	3.0.4	-	Compare
spatie/array-to-xml	Removed	3.4.0	-	Compare
symfony/polyfill-php83	Removed	v1.31.0	-	Compare
symfony/translation-contracts	Removed	v3.5.1	-	Compare
symfony/validator	Removed	v6.4.18	-	Compare
thecodingmachine/phpstan-safe-rule	Removed	v1.2.0	-	Compare
thecodingmachine/phpstan-strict-rules	Removed	v1.0.0	-	Compare
tomasvotruba/cognitive-complexity	Removed	0.1.2	-	Compare
vimeo/psalm	Removed	5.26.1	-	Compare