Tests

Update dependency @actions/cache to v5 - autoclosed #314

Job	Run time
test-no-repo-token	6s
test-with-trellis-no-galaxy	13s
test-with-trellis-no-cache-virtualenv	49s
test-with-trellis-no-auto-init	12s
test-with-trellis	19s
test	5s
	1m 44s

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