Fix a missing action tag

Author: k0kubun

.github/workflows/dependabot_automerge.yml

@@ -16,7 +16,7 @@ jobs:
         id: metadata
 
       - name: Wait for status checks
-        uses: lewagon/wait-on-check-action@v1
+        uses: lewagon/wait-on-check-action@v1.5.0
         with:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
           ref: ${{ github.event.pull_request.head.sha || github.sha }}