Bump htmltools dependency to 0.2.0

Author: wch

setup.cfg

@@ -39,7 +39,7 @@ install_requires =
     contextvars>=2.4
     websockets>=10.0
     python-multipart
-    htmltools>=0.1.4.9002
+    htmltools>=0.2.1
     click>=8.0.3
     markdown-it-py>=1.1.0
     # This is needed for markdown-it-py. Without it, when loading shiny/ui/_markdown.py,