build(deps): bump the patches group in /docs with 4 updates

Bumps the patches group in /docs with 4 updates: [deepmerge](https://github.com/toumorokoshi/deepmerge), [griffe](https://github.com/mkdocstrings/griffe), [mkdocstrings-python](https://github.com/mkdocstrings/python) and [zensical](https://github.com/zensical/zensical).


Updates `deepmerge` from 2.0 to 2.1.0
- [Release notes](https://github.com/toumorokoshi/deepmerge/releases)
- [Commits](https://github.com/toumorokoshi/deepmerge/compare/v2.0...v2.1.0)

Updates `griffe` from 2.0.2 to 2.1.0
- [Release notes](https://github.com/mkdocstrings/griffe/releases)
- [Changelog](https://github.com/mkdocstrings/griffe/blob/main/CHANGELOG.md)
- [Commits](https://github.com/mkdocstrings/griffe/compare/2.0.2...2.1.0)

Updates `mkdocstrings-python` from 2.0.4 to 2.0.5
- [Release notes](https://github.com/mkdocstrings/python/releases)
- [Changelog](https://github.com/mkdocstrings/python/blob/main/CHANGELOG.md)
- [Commits](https://github.com/mkdocstrings/python/compare/2.0.4...2.0.5)

Updates `zensical` from 0.0.45 to 0.0.46
- [Release notes](https://github.com/zensical/zensical/releases)
- [Commits](https://github.com/zensical/zensical/compare/v0.0.45...v0.0.46)

---
updated-dependencies:
- dependency-name: deepmerge
  dependency-version: 2.1.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: patches
- dependency-name: griffe
  dependency-version: 2.1.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: patches
- dependency-name: mkdocstrings-python
  dependency-version: 2.0.5
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: patches
- dependency-name: zensical
  dependency-version: 0.0.46
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: patches
...

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

docs/requirements.txt

@@ -1,8 +1,8 @@
 click==8.4.1
 colorama==0.4.6
-deepmerge==2.0
+deepmerge==2.1.0
 ghp-import==2.1.0
-griffe==2.0.2
+griffe==2.1.0
 Jinja2==3.1.6
 Markdown==3.10.2
 MarkupSafe==3.0.3
@@ -11,7 +11,7 @@ mkdocs==1.6.1
 mkdocs-autorefs==1.4.4
 mkdocs-get-deps==0.2.2
 mkdocstrings==1.0.4
-mkdocstrings-python==2.0.4
+mkdocstrings-python==2.0.5
 packaging==26.2
 pathspec==1.1.1
 platformdirs==4.10.0
@@ -22,4 +22,4 @@ PyYAML==6.0.3
 pyyaml_env_tag==1.1
 six==1.17.0
 watchdog==6.0.0
-zensical==0.0.45
+zensical==0.0.46