ref: improve settings loading exception reporting

Deduplicate the one exception we make.

Also now instead of just eating the catchall exception, we raise from it
so that you have slightly more insight into its cause

dedupe/api.py

@@ -996,6 +996,10 @@ def _load_settings(
         # Make a copy so we can read it multiple times
         settings_file = BytesIO(settings_file.read())
         settings_file.seek(0)
+        catchall_exception = SettingsFileLoadingException(
+            "Something has gone wrong with loading the settings file. "
+            "Try deleting the file"
+        )
         try:
             version = pickle.load(settings_file)
             if not isinstance(version, int):
@@ -1021,15 +1025,9 @@ def _load_settings(
                     "install that library: `pip install rlr`"
                 )
             else:
-                raise SettingsFileLoadingException(
-                    "Something has gone wrong with loading the settings file. "
-                    "Try deleting the file"
-                ) from exc
-        except:  # noqa: E722
-            raise SettingsFileLoadingException(
-                "Something has gone wrong with loading the settings file. "
-                "Try deleting the file"
-            )
+                raise
+        except Exception as exc:
+            raise catchall_exception from exc
 
     @staticmethod
     def _load_settings_v0(