tools: group CodeQL GHA updates

Having separate PRs is noisy and do not really make sense, it makes more
sense to keep them aligned.

Signed-off-by: Antoine du Hamel <duhamelantoine1995@gmail.com>
PR-URL: #66057
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Filip Skokan <panva.ip@gmail.com>

Author: aduh95

.github/dependabot.yml

@@ -9,6 +9,11 @@ updates:
     commit-message:
       prefix: meta
     open-pull-requests-limit: 10
+    groups:
+      codeql-action:
+        applies-to: version-updates
+        patterns:
+          - github/codeql-action
 
   - package-ecosystem: npm
     directory: /tools/eslint