Disable caching for arm64 runners #1120

Job	Run time
quicktests	45s
lint	38s
coverage	1m 5s
unittests (ubuntu-22.04)	1m 36s
unittests (ubuntu-latest-arm-8-cores)	4m 47s
unittests (macos-13)	2m 49s
unittests (self-hosted, macos, arm64)	49s
unittests (windows-2022)	3m 17s
Build postcli (ubuntu-22.04)	49s
Build postcli (ubuntu-latest-arm-8-cores)	3m 36s
Build postcli (macos-13)	1m 51s
Build postcli (self-hosted, macos, arm64)	25s
Build postcli (windows-2022)	2m 11s
Publish release	0s
	24m 38s

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