Use minor version, ignore patches for CodeQL (#43088)

The patches of CodeQL updated by dependabot were causing too many engine PRs. This change updates to allow for dependabot to just use minor versions.

*List which issues are fixed by this PR. You must list at least one issue.*
Addresses https://github.com/flutter/flutter/issues/112911

*If you had to change anything in the [flutter/tests] repo, include a link to the migration guide as per the [breaking change policy].*

[C++, Objective-C, Java style guides]: https://github.com/flutter/engine/blob/main/CONTRIBUTING.md#style

.github/dependabot.yml

diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index 1b68745..0edf472 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -11,3 +11,7 @@
       timezone: "America/Los_Angeles"
     labels:
       - "autosubmit"
+    ignore:
+      # ignore patch versions, just rely on minor in order to update fewer times
+      - dependency-name: "github/codeql-action"
+        update-types: ["version-update:semver-minor"]