Update sync-dev-to-vX.Y-dev.yaml

Author: ralfhandl

.github/workflows/sync-dev-to-vX.Y-dev.yaml

@@ -19,6 +19,8 @@ jobs:
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
 
       - name: Create pull requests
         id: pull_requests