Update requirements

requirements.txt

@@ -8,7 +8,7 @@ mkdocs-embed-file-plugins==2.0.9
 mkdocs_custom_fences==0.1.2
 mkdocs-git-revision-date-localized-plugin==1.3.0
 mkdocs-encryptcontent-plugin==3.0.3
-mkdocs-callouts==1.14.1
+mkdocs-callouts==1.15.0
 mkdocs-custom-tags-attributes==0.3.3
 mkdocs-meta-descriptions-plugin==3.0.0
 obsidiantools==0.10.0