Fixes cache version

Author: lsolesen

.github/workflows/deploy.yml

@@ -111,7 +111,7 @@ jobs:
           key: ${{ runner.os }}-${{ github.sha }}
       - name: ⚡️ Cache HTMLProofer
         id: cache-htmlproofer
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         with:
           path: tmp/.htmlproofer
           key: ${{ runner.os }}-htmlproofer