Remove strictness annotations on CCache #9856

Job	Run time
ormolu	14s
build ucm (ubuntu-20.04)	3m 33s
build ucm (macOS-13)	13m 59s
build ucm (windows-2019)	8m 42s
generate jit source	6s
run transcripts (ubuntu-20.04)	3m 53s
run interpreter tests (ubuntu-20.04)	1m 1s
run transcripts (macos-13)	7m 34s
run interpreter tests (macos-13)	1m 50s
run transcripts (windows-2019)	7m 40s
build jit binary / build jit binary (ubuntu-20.04)	14s
build jit binary / build jit binary (macOS-13)	18s
build jit binary / build jit binary (windows-2019)	20s
test jit / test jit (ubuntu-20.04)	6s
test jit / test jit (macOS-13)	14s
	49m 44s

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