build(deps): update actions/cache action to v6

Author: renovate[bot]

.github/workflows/cd.yml

@@ -25,7 +25,7 @@ jobs:
         id: yarn-cache-dir-path
         run: echo "dir=$(yarn config get cacheFolder)" >> $GITHUB_OUTPUT
 
-      - uses: actions/cache@v5
+      - uses: actions/cache@v6
         id: yarn-cache # use this to check for `cache-hit` (`steps.yarn-cache.outputs.cache-hit != 'true'`)
         with:
           path: ${{ steps.yarn-cache-dir-path.outputs.dir }}