Added htmlmin to known list (#2907)

## Changes
Added `htmlmin` to known list

### Linked issues
Partly resolve #1931

Author: pritishpai

src/databricks/labs/ucx/source_code/known.json

@@ -6362,6 +6362,17 @@
   "html5lib": {
     "html5lib": []
   },
+  "htmlmin": {
+    "htmlmin": [],
+    "htmlmin.command": [],
+    "htmlmin.decorator": [],
+    "htmlmin.escape": [],
+    "htmlmin.main": [],
+    "htmlmin.middleware": [],
+    "htmlmin.parser": [],
+    "htmlmin.python3html": [],
+    "htmlmin.python3html.parser": []
+  },
   "httpcore": {
     "httpcore": [],
     "httpcore._api": [],
@@ -31056,4 +31067,4 @@
     "zipp.compat.py310": [],
     "zipp.glob": []
   }
-}
+}