dependabot: bump mkdocs-material from 9.6.17 to 9.6.18 (#251)

Author: dependabot[bot]

requirements.txt

@@ -1,7 +1,7 @@
 mkdocs==1.6.0
 # mkdocs-git-revision-date-localized-plugin==1.1.0
 mkdocs-glightbox==0.4.0
-mkdocs-material==9.6.17
+mkdocs-material==9.6.18
 mkdocs-material-extensions==1.3
 mkdocs-minify-plugin==0.8.0
 pygments==2.19.2