Fixed logger import path for DEBUG notebook (#792)

## Changes

Fixed import in generated DEBUG.py notebook to work with new package
layout.

Fixes #790 

### Tests

- [x] manually tested

src/databricks/labs/ucx/install.py

@@ -99,12 +99,12 @@
 
 import logging
 from pathlib import Path
+from databricks.labs.blueprint.logger import install_logger
 from databricks.labs.ucx.__about__ import __version__
 from databricks.labs.ucx.config import WorkspaceConfig
-from databricks.labs.ucx.framework import logger
 from databricks.sdk import WorkspaceClient
 
-logger._install()
+install_logger()
 logging.getLogger("databricks").setLevel("DEBUG")
 
 cfg = WorkspaceConfig.from_file(Path("/Workspace{config_file}"))