Update taiki-e/install-action digest to 97a5807

Author: renovate[bot]

.github/workflows/tests.yaml

@@ -32,7 +32,7 @@ jobs:
       - uses: dtolnay/rust-toolchain@29eef336d9b2848a0b548edc03f92a220660cdb8 # stable
         with:
           components: llvm-tools-preview
-      - uses: taiki-e/install-action@a164de717a0ee9284c2d9db1c6016a4c339cd333 # v2
+      - uses: taiki-e/install-action@97a5807a604e12de3a13b52d868ebecaeeea757c # v2
         with:
           tool: cargo-llvm-cov
       - uses: Swatinem/rust-cache@e18b497796c12c097a38f9edb9d0641fb99eee32 # v2