Restrict httpx version to <1.0.0 (#2345) #1644

Job	Run time
checks / readme-snippets	14s
checks / pre-commit	33s
checks / test (3.12, lowest-direct, ubuntu-latest)	1m 16s
checks / test (3.13, lowest-direct, ubuntu-latest)	50s
checks / test (3.11, locked, windows-latest)	2m 19s
checks / test (3.11, lowest-direct, ubuntu-latest)	54s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 12s
checks / test (3.11, lowest-direct, windows-latest)	2m 50s
checks / test (3.12, locked, windows-latest)	3m 6s
checks / test (3.10, locked, windows-latest)	2m 47s
checks / test (3.10, lowest-direct, windows-latest)	2m 23s
checks / test (3.12, locked, ubuntu-latest)	55s
checks / test (3.10, lowest-direct, ubuntu-latest)	52s
checks / test (3.12, lowest-direct, windows-latest)	4m 6s
checks / test (3.14, locked, ubuntu-latest)	2m 15s
checks / test (3.14, lowest-direct, windows-latest)	2m 28s
checks / test (3.10, locked, ubuntu-latest)	55s
checks / test (3.13, lowest-direct, windows-latest)	2m 12s
checks / test (3.11, locked, ubuntu-latest)	50s
checks / test (3.13, locked, windows-latest)	2m 6s
checks / test (3.13, locked, ubuntu-latest)	49s
checks / test (3.14, locked, windows-latest)	3m 0s
all-green	3s
	38m 55s

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