Changes

refactor(tekton): move advanced-statefulset triggers to env-prod2 (#3919)

This pull request updates the Tekton trigger resource configurations by
adjusting which `advanced-statefulset` resources are included in
different environments. The main changes involve removing these
resources from one environment and adding them to another, likely to
better align with deployment needs.

**Resource configuration updates:**

* Removed `pingcap/advanced-statefulset/git-create-tag.yaml` and
`pingcap/advanced-statefulset/git-push.yaml` from the main triggers
kustomization (`tekton/v0/triggers/triggers/kustomization.yaml`).
* Added `pingcap/advanced-statefulset/git-create-tag.yaml` and
`pingcap/advanced-statefulset/git-push.yaml` to the `env-prod2`
environment triggers kustomization
(`tekton/v1/triggers/triggers/env-prod2/kustomization.yaml`).
 (commit: 2703250)