Fixed UnicodeDecodeError when fetching init scripts (#3103)

Author: nfx

src/databricks/labs/ucx/assessment/clusters.py

@@ -95,7 +95,8 @@ def _get_init_script_data(self, init_script_info: InitScriptInfo) -> str | None:
                     return data
 
             return None
-        except (NotFound, BadRequest):
+        except (NotFound, BadRequest, FileNotFoundError, UnicodeDecodeError) as e:
+            logger.warning(f"Error reading {init_script_info}: {e}")
             return None
 
     def _check_cluster_init_script(self, init_scripts: list[InitScriptInfo], source: str) -> list[str]: