build(deps): update mkdocs-glightbox requirement

Updates the requirements on [mkdocs-glightbox](https://github.com/blueswen/mkdocs-glightbox) to permit the latest version.
- [Release notes](https://github.com/blueswen/mkdocs-glightbox/releases)
- [Changelog](https://github.com/blueswen/mkdocs-glightbox/blob/main/CHANGELOG)
- [Commits](blueswen/mkdocs-glightbox@v0.3.0...v0.5.1)

---
updated-dependencies:
- dependency-name: mkdocs-glightbox
  dependency-version: 0.5.1
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements.txt

@@ -14,7 +14,7 @@ mkdocs-exclude>=1.0,<1.1
 mkdocs-git-authors-plugin>=0.10,<0.11
 mkdocs-git-committers-plugin-2>=2.5,<2.6
 mkdocs-git-revision-date-localized-plugin>=1,<1.5
-mkdocs-glightbox>=0.3,<0.5
+mkdocs-glightbox>=0.3,<0.6
 mkdocs-macros-plugin>=0.5,<1.4
 mkdocs-minify-plugin<0.9
 mkdocs-redirects<1.3