chore(deps): update alpine/git docker tag to v2.45.2 (#1212)

[![Mend
Renovate](https://app.renovatebot.com/images/banner.svg)](https://renovatebot.com)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| alpine/git | minor | `2.43.0` -> `2.45.2` |

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined),
Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you
are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the
rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
again.

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

This PR was generated by [Mend
Renovate](https://www.mend.io/free-developer-tools/renovate/). View the
[repository job
log](https://developer.mend.io/github/PingCAP-QE/ee-ops).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy40NDAuNyIsInVwZGF0ZWRJblZlciI6IjM3LjQ0MC43IiwidGFyZ2V0QnJhbmNoIjoibWFpbiIsImxhYmVscyI6W119-->

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

apps/prod/tekton/configs/tasks/pingcap-git-clone-ext.yaml

@@ -107,7 +107,7 @@ spec:
         The epoch timestamp of the commit that was fetched by this Task.
   steps:
     - name: get
-      image: alpine/git:2.43.0
+      image: alpine/git:2.45.2
       workingDir: $(workspaces.output.path)/$(params.master-directory)
       resources:
         requests: