whitelist blessed (#2130)

## Changes
whitelist blessed

### Linked issues
Progresses #1901 

### Functionality
None

### Tests
- [x] manually tested

Co-authored-by: Eric Vergnaud <[email protected]>

Author: ericvergnaud

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

@@ -1014,6 +1014,17 @@
     "bleach.parse_shim": [],
     "bleach.sanitizer": []
   },
+  "blessed": {
+    "blessed": [],
+    "blessed._capabilities": [],
+    "blessed.color": [],
+    "blessed.colorspace": [],
+    "blessed.formatters": [],
+    "blessed.keyboard": [],
+    "blessed.sequences": [],
+    "blessed.terminal": [],
+    "blessed.win_terminal": []
+  },
   "blinker": {
     "blinker": [],
     "blinker._utilities": [],