Update Dependabot rules to avoid auto-approve breaking changes

Author: lulunac27a

.github/workflows/dependabot-merge.yml

@@ -8,7 +8,7 @@ permissions:
 jobs:
   dependabot:
     runs-on: ubuntu-latest
-    if: github.actor == 'dependabot[bot]'
+    if: github.actor == 'dependabot[bot]' && steps.dependabot-metadata.outputs.update-type != 'version-update:semver-major'
     steps:
       - name: Dependabot metadata
         id: metadata