Dependabot auto-merge: Fix if syntax (#5)

Author: tangrufus

.github/workflows/dependabot-auto-merge.yml

@@ -23,7 +23,7 @@ jobs:
         with:
           github-token: "${{ secrets.GITHUB_TOKEN }}"
       - name: Enable auto-merge for Dependabot PRs
-        if: steps.dependabot-metadata.outputs.update-type != 'version-update:semver-major'}}
+        if: steps.dependabot-metadata.outputs.update-type != 'version-update:semver-major'
         run: gh pr merge --auto --merge "$PR_URL"
         env:
           PR_URL: ${{github.event.pull_request.html_url}}