chore(dependabot): disable automatic eslint 9 update (#1041)

Currently our automated dependency updates are blocked by eslint 9 which
we can not update yet because not all of our plugins support it yet.

So we ignore it for now so all other dependencies can be updated by
dependabot again.

Follow up: #1042

.github/dependabot.yml

@@ -17,6 +17,12 @@ updates:
         update-types:
           - major
 
+    # ignore eslint 9 update for now until it is supported by all our used plugins:
+    # see: https://github.com/vuejs/eslint-config-typescript/issues/76
+    ignore:
+      - dependency-name: eslint
+        update-types: [version-update:semver-major]
+
   - package-ecosystem: github-actions
     directory: /
     schedule: