.github: dependabot.yml: ignore all non-patch updates to the root app

Author: ethan-mfb

.github/dependabot.yml

@@ -5,6 +5,9 @@ updates:
     directory: "/"
     schedule:
       interval: "weekly"
+    ignore:
+      - dependency-name: "*"
+        update-types: ["version-update:semver-major", "version-update:semver-minor"]
 
   # version updates for GitHub Actions
   - package-ecosystem: "github-actions"