Update actions/cache action to v5

Author: renovate[bot]

.github/workflows/lighthouse.yml

@@ -24,7 +24,7 @@ jobs:
           echo "STORE_PATH=$(pnpm store path --silent)" >> $GITHUB_ENV
 
       - name: Setup pnpm cache
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: ${{ env.STORE_PATH }}
           key: ${{ runner.os }}-pnpm-store-${{ hashFiles('**/pnpm-lock.yaml') }}