Add permissions

Author: DecimalTurn

.github/workflows/preview.yml

@@ -8,6 +8,11 @@ on:
       - synchronize
       - closed
 
+# Add permissions to allow the action to create deployments
+permissions:
+  pull-requests: write
+  contents: read
+
 concurrency: preview-${{ github.ref }}
 
 jobs:
@@ -20,4 +25,5 @@ jobs:
       - name: Deploy preview
         uses: rossjrw/pr-preview-action@v1
         with:
-          source-dir: ./
+          source-dir: ./
+          token: ${{ env.GITHUB_TOKEN }}