Added preshed to known list (#3220)

## Changes
Added `preshed` to known list 

### Linked issues
Partly resolve #1931

Author: pritishpai

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

@@ -26720,6 +26720,10 @@
   "portalocker": {
     "portalocker": []
   },
+  "preshed": {
+    "preshed": [],
+    "preshed.about": []
+  },
   "prometheus_client": {
     "prometheus_client": [],
     "prometheus_client.asgi": [],