chore(deps): bump taiki-e/install-action from 2.67.30 to 2.68.8 (#152)

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -79,7 +79,7 @@ jobs:
       - uses: dtolnay/rust-toolchain@e97e2d8cc328f1b50210efc529dca0028893a2d9 # master
         with:
           toolchain: stable
-      - uses: taiki-e/install-action@288875dd3d64326724fa6d9593062d9f8ba0b131 # v2
+      - uses: taiki-e/install-action@cfdb446e391c69574ebc316dfb7d7849ec12b940 # v2
         with:
           tool: cargo-hack
       - uses: Swatinem/rust-cache@779680da715d629ac1d338a641029a2f4372abb5 # v2