Update dependency gitlab_quality-test_tooling to v2.20.2

This MR contains the following updates:

Package	Update	Change	MyDiffEnd
gitlab_quality-test_tooling (changelog)	patch	2.20.1 -> 2.20.2	https://my.diffend.io/gems/gitlab_quality-test_tooling/2.20.1/2.20.2

---

Release Notes

gitlab-org/ruby/gems/gitlab_quality-test_tooling (gitlab_quality-test_tooling)

v2.20.2

Compare Source

2.20.2 (2025-09-26)

Added (1 change)

• Send all test tooling aalerts to test-tooling-alerts channel (merge request)