Bump mkdocs-bibtex from 4.2.2 to 4.2.3 in /docs

Bumps [mkdocs-bibtex](https://github.com/shyamd/mkdocs-bibtex) from 4.2.2 to 4.2.3.
- [Release notes](https://github.com/shyamd/mkdocs-bibtex/releases)
- [Commits](shyamd/mkdocs-bibtex@v4.2.2...v4.2.3)

---
updated-dependencies:
- dependency-name: mkdocs-bibtex
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

docs/docs/requirements.txt

@@ -5,4 +5,4 @@ mkdocs-macros-plugin>=1.0.4
 pymdown-extensions
 mkdocs-awesome-pages-plugin
 mkdocs-material
-mkdocs-bibtex==4.2.2
+mkdocs-bibtex==4.2.3

docs/requirements.txt

@@ -5,5 +5,5 @@ mkdocs-macros-plugin>=1.0.4
 pymdown-extensions
 mkdocs-awesome-pages-plugin
 mkdocs-material
-mkdocs-bibtex==4.2.2
+mkdocs-bibtex==4.2.3
 mkdocs-mermaid2-plugin