viable/strict/1790249252: Revert "[CI] Update sccache to 0.18.0 (#198237)"

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This reverts commit 2954159 . Reverted #198237 on behalf of https://github.com/jansel due to Breaks every trunk build that compiles torchao: inductor-build-cuda134 and torchtitan-x-pytorch-build have been red on all 22 commits since this landed ( comment )

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