Create Pr just when label post is present

Author: nvdaes

.github/workflows/createPost.yaml

@@ -12,6 +12,7 @@ jobs:
     name: Add post
     runs-on: ubuntu-latest
     steps:
+    if: github.event.label.name == 'post'
     - name: Checkout code
       uses: actions/checkout@v2
     - name: Get data