Merge pull request #162 from OUCC/update-actions-cache

update actions/cache

Author: miyaji255

.github/workflows/ci.yaml

@@ -22,7 +22,7 @@ jobs:
           node-version-file: .node-version
           cache: pnpm
       - run: pnpm install
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: dist/cache
           key: ${{ runner.os }}-astro-build-${{ github.event_name == 'pull_request' && github.event.pull_request.id || 'main' }}