chore(deps): update python docker tag to v3.14.6 (#227)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| python | minor | `3.13.7` → `3.14.6` |

---

### Configuration

📅 **Schedule**: (UTC)

- 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://mend.io/renovate/).
View the [repository job
log](https://developer.mend.io/github/DrupalSecurityTeam/drupal-advisory-database).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0My4yMDkuNCIsInVwZGF0ZWRJblZlciI6IjQzLjI0Mi4yIiwidGFyZ2V0QnJhbmNoIjoibWFpbiIsImxhYmVscyI6W119-->

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

Author: renovate[bot]

.python-version

@@ -1 +1 @@
-3.13.7
+3.14.6