Normalize `REPOSITORY_URL` #4122

Job	Run time
Generate Matrix	5s
Test Alpine Linux	0s
Test Auditwheel	0s
Test Docker	0s
Test Emscripten	0s
Test Bootstrap (ubuntu-latest)	4s
Test Bootstrap (macos-14)	11s
Test MSRV	1m 58s
Test Bootstrap (windows-latest)	11s
Check ${{ matrix.platform.target }}	0s
Test Cross Compile	0s
Test downstream - ${{ matrix.downstream.repository }}	0s
Test windows cross	21m 58s
Test (ubuntu-latest, 3.12)	11m 54s
Test (ubuntu-latest, pypy3.10)	11m 40s
Test (macos-14, 3.12)	9m 47s
Test (windows-latest, 3.12)	21m 15s
Test (windows-latest, pypy3.10)	21m 11s
conclusion	3s
	1h 40m 17s

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