Bump the python-packages group across 1 directory with 6 updates

Bumps the python-packages group with 6 updates in the /docs directory:

| Package | From | To |
| --- | --- | --- |
| [idna](https://github.com/kjd/idna) | `3.6` | `3.7` |
| [mkdocs](https://github.com/mkdocs/mkdocs) | `1.5.3` | `1.6.0` |
| [mkdocs-material](https://github.com/squidfunk/mkdocs-material) | `9.5.15` | `9.5.20` |
| [platformdirs](https://github.com/platformdirs/platformdirs) | `4.2.0` | `4.2.1` |
| [pymdown-extensions](https://github.com/facelessuser/pymdown-extensions) | `10.7.1` | `10.8.1` |
| [regex](https://github.com/mrabarnett/mrab-regex) | `2023.12.25` | `2024.4.28` |



Updates `idna` from 3.6 to 3.7
- [Release notes](https://github.com/kjd/idna/releases)
- [Changelog](https://github.com/kjd/idna/blob/master/HISTORY.rst)
- [Commits](kjd/idna@v3.6...v3.7)

Updates `mkdocs` from 1.5.3 to 1.6.0
- [Release notes](https://github.com/mkdocs/mkdocs/releases)
- [Commits](mkdocs/mkdocs@1.5.3...1.6.0)

Updates `mkdocs-material` from 9.5.15 to 9.5.20
- [Release notes](https://github.com/squidfunk/mkdocs-material/releases)
- [Changelog](https://github.com/squidfunk/mkdocs-material/blob/master/CHANGELOG)
- [Commits](squidfunk/mkdocs-material@9.5.15...9.5.20)

Updates `platformdirs` from 4.2.0 to 4.2.1
- [Release notes](https://github.com/platformdirs/platformdirs/releases)
- [Changelog](https://github.com/platformdirs/platformdirs/blob/main/CHANGES.rst)
- [Commits](tox-dev/platformdirs@4.2.0...4.2.1)

Updates `pymdown-extensions` from 10.7.1 to 10.8.1
- [Release notes](https://github.com/facelessuser/pymdown-extensions/releases)
- [Commits](facelessuser/pymdown-extensions@10.7.1...10.8.1)

Updates `regex` from 2023.12.25 to 2024.4.28
- [Changelog](https://github.com/mrabarnett/mrab-regex/blob/hg/changelog.txt)
- [Commits](mrabarnett/mrab-regex@2023.12.25...2024.4.28)

---
updated-dependencies:
- dependency-name: idna
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: python-packages
- dependency-name: mkdocs
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: python-packages
- dependency-name: mkdocs-material
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: python-packages
- dependency-name: platformdirs
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: python-packages
- dependency-name: pymdown-extensions
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: python-packages
- dependency-name: regex
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: python-packages
...

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

docs/requirements.txt

@@ -4,24 +4,24 @@ charset-normalizer==3.3.2
 click==8.1.7
 colorama==0.4.6
 ghp-import==2.1.0
-idna==3.6
+idna==3.7
 Jinja2==3.1.3
 Markdown==3.6
 MarkupSafe==2.1.5
 mergedeep==1.3.4
-mkdocs==1.5.3
-mkdocs-material==9.5.15
+mkdocs==1.6.0
+mkdocs-material==9.5.20
 mkdocs-material-extensions==1.3.1
 packaging==24.0
 paginate==0.5.6
 pathspec==0.12.1
-platformdirs==4.2.0
+platformdirs==4.2.1
 Pygments==2.17.2
-pymdown-extensions==10.7.1
+pymdown-extensions==10.8.1
 python-dateutil==2.9.0.post0
 PyYAML==6.0.1
 pyyaml_env_tag==0.1
-regex==2023.12.25
+regex==2024.4.28
 requests==2.31.0
 six==1.16.0
 urllib3==2.2.1