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Downgrade `@actions/cache` for now #11235

Job	Run time
Split workflow (macos-latest, linked)	35s
Split workflow (ubuntu-latest, default)	1m 10s
Split workflow (macos-latest, default)	1m 38s
Split workflow (ubuntu-latest, linked)	1m 20s
Split workflow (macos-latest, nightly-latest)	1m 32s
Split workflow (ubuntu-latest, nightly-latest)	1m 8s
	7m 23s