Update prevent-wrong-pr.yml

.github/workflows/prevent-wrong-pr.yml

@@ -13,7 +13,7 @@ jobs:
     steps:
       - name: Prevent dev merges
         run: |
-          if [[ "${{ github.head_ref }}" == "dev" ]]; then
+          if [[ "${{ github.head_ref }}" == "dev" && "${{ github.base_ref }}" == "main" ]]; then
             echo "ERROR: Merging 'dev' into '${{ github.base_ref }}' is forbidden!"
             exit 1
           fi