Bump version of pymdown-extensions up to 8.0.1

Author: Oleksandr Anyshchenko

requirements.lock

@@ -12,7 +12,7 @@ livereload==2.6.1
 lunr[languages]==0.5.6
 Markdown==3.2.1
 MarkupSafe==1.1.1
-pymdown-extensions==6.3
+pymdown-extensions==8.0.1
 PyYAML==5.1
 six==1.12.0
 tornado==6.0.3