Update cache action version

Author: marcelovilla

.github/workflows/test-website.yml

@@ -19,7 +19,7 @@ jobs:
         run: echo "::set-output name=dir::$(yarn cache dir)"
 
       - name: Cache dependencies 🧪
-        uses: actions/cache@v2
+        uses: actions/cache@v4
         id: yarn-cache
         with:
           path: ${{ steps.yarn-cache-dir-path.outputs.dir }}