dependabot: bump mkdocs-glightbox from 0.3.7 to 0.4.0

Bumps [mkdocs-glightbox](https://github.com/Blueswen/mkdocs-glightbox) from 0.3.7 to 0.4.0.
- [Release notes](https://github.com/Blueswen/mkdocs-glightbox/releases)
- [Changelog](https://github.com/blueswen/mkdocs-glightbox/blob/main/CHANGELOG)
- [Commits](blueswen/mkdocs-glightbox@v0.3.7...v0.4.0)

---
updated-dependencies:
- dependency-name: mkdocs-glightbox
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements.txt

@@ -1,6 +1,6 @@
 mkdocs==1.6.0
 # mkdocs-git-revision-date-localized-plugin==1.1.0
-mkdocs-glightbox==0.3.7
+mkdocs-glightbox==0.4.0
 mkdocs-material==9.5.21
 mkdocs-material-extensions==1.3
 mkdocs-minify-plugin==0.8.0