chore(deps): update actions/cache action to v5

Author: renovate[bot]

.github/workflows/documentation.yml

@@ -85,7 +85,7 @@ jobs:
         run: |
           echo "YEAR_MONTH=$(/bin/date -u "+%Y%m")" >> $GITHUB_OUTPUT
 
-      - uses: actions/cache@v4
+      - uses: actions/cache@v5
         name: Setup pnpm cache
         with:
           path: ${{ steps.pnpm-config.outputs.STORE_PATH }}