Lock writing the cached file, this avoids requesting the same file ma… #154

Job	Run time
pre-commit	15s
combine-environments	9s
unit-tests (3.11)	5m 26s
docs-build	19s
type-check	27s
integration-tests (3.11, -integration)	2m 53s
distribution	0s
upload-to-pypi	0s
	9m 29s

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