Remove latest from 4.2 since 4.3 is released (logicalclocks#469)

Author: robzor92

.github/workflows/mkdocs-release.yml

@@ -30,4 +30,4 @@ jobs:
 
       # Put this back and increment version when cutting a new release branch
       - name: mike deploy docs
-        run: mike deploy 4.2 latest -u --push
+        run: mike deploy 4.2 -u --push