chore(deps): update python docker tag to v3.13 (hetznercloud/fleeting…

…-plugin-hetzner!126)

This MR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| python | image | minor | `3.12` -> `3.13` |

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### 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 MR is behind base branch, or you tick the rebase/retry checkbox.

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

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

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This MR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).
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.gitlab/ci/test.gitlab-ci.yml

@@ -1,6 +1,6 @@
 pre-commit:
   stage: test
-  image: python:3.12
+  image: python:3.13
   extends:
     - .rules:merge_request_or_release
   variables: