fixes #1756

Job	Run time
Test rubygems: version upgrades RubyGems to that version if the default is older	25s
Test with no Gemfile but with bundler-cache	22s
Test bundler: 1.x for old Ruby	19s
Test .ruby-version	6s
Test with no Gemfile	21s
test-matrix	7s
Test rubygems: version uses the Bundler installed by the rubygems update	11s
Test rubygems: latest on 2.5	24s
Test mise.toml	7s
Test rubygems: latest on 3.0	11s
Test rubygems: version noops if the default is newer	6s
Test .tool-versions	4s
Test rubygems: latest on 2.6	26s
Test rubygems: latest on 2.3	24s
Test BUNDLED WITH Bundler dev	5s
Test windows-toolchain: none	28s
Test rubygems: latest on 3.2	9s
Check windows*versions.json are up-to-date	9s
Test with a major Bundler version	22s
Check dist/index.js is up-to-date	16s
Test rubygems: latest on 2.7	27s
Test with an exact Bundler version	23s
Test with an older Bundler version than the one of the default gem	9s
Test with rails8 gemfile	10s
Test with rails7 gemfile	13s
Test rubygems: latest on 2.0	9s
Test gemfile depending on Bundler 1	22s
Test with a Bundler pre/rc version	24s
Test with a minor Bundler version	23s
${{ matrix.os }} ${{ matrix.ruby }}	-1s
	7m 41s

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