Ignore major version update for dependabot

Author: ligangty

.github/dependabot.yml

@@ -8,6 +8,9 @@ updates:
     directory: "/" # Location of package manifests
     schedule:
       interval: "weekly"
+    ignore:
+      - dependency-name: "*"
+        update-types: ["version-update:semver-major"]
 
   - package-ecosystem: "github-actions" # Also update Github actions
     directory: "/"