fix: update actions workflow

Author: aabiddanda

.github/workflows/deploy.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
       with:
         persist-credentials: false
     # NOTE: Python is necessary for the pre-rendering (minification) step