build(deps): update mkdocs-macros-plugin requirement

Updates the requirements on [mkdocs-macros-plugin](https://github.com/fralau/mkdocs_macros_plugin) to permit the latest version.
- [Release notes](https://github.com/fralau/mkdocs_macros_plugin/releases)
- [Changelog](https://github.com/fralau/mkdocs-macros-plugin/blob/master/CHANGELOG.md)
- [Commits](fralau/mkdocs-macros-plugin@v0.5.0...v1.3.7)

---
updated-dependencies:
- dependency-name: mkdocs-macros-plugin
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

requirements.txt

@@ -15,7 +15,7 @@ mkdocs-git-authors-plugin<0.10
 mkdocs-git-committers-plugin-2>=2.2.3,<2.5
 mkdocs-git-revision-date-localized-plugin>=1,<1.4
 mkdocs-glightbox>=0.3,<0.5
-mkdocs-macros-plugin>=0.5,<1.3
+mkdocs-macros-plugin>=0.5,<1.4
 mkdocs-minify-plugin<0.9
 mkdocs-redirects<1.3
 mkdocs-rss-plugin>=1.14,<1.17