chore(deps): update dependency pymdown-extensions to v10.13 (#1754)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
|
[pymdown-extensions](https://redirect.github.com/facelessuser/pymdown-extensions)
| `==10.12` -> `==10.13` |
[![age](https://developer.mend.io/api/mc/badges/age/pypi/pymdown-extensions/10.13?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/pypi/pymdown-extensions/10.13?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/pypi/pymdown-extensions/10.12/10.13?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/pypi/pymdown-extensions/10.12/10.13?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

> [!WARNING]
> Some dependencies could not be looked up. Check the Dependency
Dashboard for more information.

---

### Release Notes

<details>
<summary>facelessuser/pymdown-extensions (pymdown-extensions)</summary>

###
[`v10.13`](https://redirect.github.com/facelessuser/pymdown-extensions/releases/tag/10.13)

[Compare
Source](https://redirect.github.com/facelessuser/pymdown-extensions/compare/10.12...10.13)

#### 10.13

- **NEW**: Snippets: Allow multiple line numbers or line number blocks
separated by `,`.
- **NEW**: Snippets: Allow using a negative index for number start
indexes and end indexes. Negative indexes are converted to positive
indexes based on the number of lines in the snippet.
-   **FIX**: Snippets: Properly capture empty newline at end of file.
- **FIX**: Snippets: Fix issue where when non sections of files are
included, section labels are not stripped.
-   **FIX**: BetterEm: Fixes for complex cases.
- **FIX**: Blocks: More consistent handling of empty newlines in block
processor extensions.

</details>

---

### Configuration

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

🚦 **Automerge**: Enabled.

♻ **Rebasing**: Whenever PR is behind base branch, 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/typesafegithub/github-workflows-kt).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzOS44MC4wIiwidXBkYXRlZEluVmVyIjoiMzkuODAuMCIsInRhcmdldEJyYW5jaCI6Im1haW4iLCJsYWJlbHMiOltdfQ==-->

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

Author: renovate[bot]

docs/requirements.txt

@@ -2,4 +2,4 @@ mkdocs==1.6.1
 mkdocs-material==9.5.49
 mkdocs-material-extensions==1.3.1
 mkdocs-video==1.5.0
-pymdown-extensions==10.12
+pymdown-extensions==10.13