refactor: Log a debug message when inspecting a module raises an error

Issue-mkdocstrings-753: mkdocstrings/mkdocstrings#753

Author: pawamoy

src/_griffe/loader.py

@@ -667,6 +667,8 @@ def _inspect_module(self, module_name: str, filepath: Path | None = None, parent
             )
         except SystemExit as error:
             raise ImportError(f"Importing '{module_name}' raised a system exit") from error
+        except Exception as error:
+            raise ImportError(f"Importing '{module_name}' raised an exception") from error
         elapsed = datetime.now(tz=timezone.utc) - start
         self._time_stats["time_spent_inspecting"] += elapsed.microseconds
         return module