Includes exception information during exception listing folders

Co-authored-by: Florian <florian.brandes@posteo.de>

src/paperless_mail/mail.py

@@ -198,10 +198,11 @@ class MailAccountHandler(LoggingMixin):
             try:
                 for folder_info in M.folder.list():
                     self.log("info", f"Located folder: {folder_info.name}")
-            except Exception:
+            except Exception as e:
                 self.log(
                     "error",
-                    "Exception during folder listing, unable to provide list folders",
+                    "Exception during folder listing, unable to provide list folders: "
+                    + str(e),
                 )
 
             raise MailError(