Automerge major dependency updates to reduce traffic (#11)

* Automerge major dependency updates to reduce traffic

It’s important that we automerge major updates as they are the only ones that will be opened in most of our repos because we do not use lockfiles.

Let’s trust our tests to detect any potential breakage.

* Update plugins-ci.yml

.github/workflows/plugins-ci.yml

@@ -64,4 +64,4 @@ jobs:
         with:
           exclude: ${{ inputs.auto-merge-exclude }}
           github-token: ${{ secrets.GITHUB_TOKEN }}
-          target: minor
+          target: major