Sync requirements.txt from 5.5 to 5.4

Author: TimWolla

requirements.txt

@@ -1,6 +1,6 @@
 Markdown==3.3.4
-mike==1.0.1
+mike==1.1.2
 mkdocs-git-revision-date-plugin==0.3.1
-mkdocs-macros-plugin==0.5.5 
-mkdocs-material==7.1.6
-mkdocs==1.1.2
+mkdocs-macros-plugin==0.6.0 
+mkdocs-material==7.3.4
+mkdocs==1.2.3