chore(deps): bump the python group in /assets with 2 updates

Bumps the python group in /assets with 2 updates: [ruff](https://github.com/astral-sh/ruff) and [mkdocs-material](https://github.com/squidfunk/mkdocs-material).


Updates `ruff` from 0.3.2 to 0.3.4
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@v0.3.2...v0.3.4)

Updates `mkdocs-material` from 9.5.13 to 9.5.16
- [Release notes](https://github.com/squidfunk/mkdocs-material/releases)
- [Changelog](https://github.com/squidfunk/mkdocs-material/blob/master/CHANGELOG)
- [Commits](squidfunk/mkdocs-material@9.5.13...9.5.16)

---
updated-dependencies:
- dependency-name: ruff
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: python
- dependency-name: mkdocs-material
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: python
...

Signed-off-by: dependabot[bot] <support@github.com>

assets/chezmoi.io/requirements.txt

@@ -1,3 +1,3 @@
 mkdocs==1.5.3
-mkdocs-material==9.5.13
+mkdocs-material==9.5.16
 mkdocs-mermaid2-plugin==1.1.1

assets/requirements.dev.txt

@@ -1 +1 @@
-ruff==0.3.2
+ruff==0.3.4