[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

bumpversion/version_part.py

@@ -228,7 +228,7 @@ def _serialize(
         except KeyError as e:
             missing_key = getattr(e, "message", e.args[0])
             raise MissingValueError(
-                f"Did not find key {repr(missing_key)} in {repr(version)} when serializing version number"
+                f"Did not find key {missing_key!r} in {repr(version)} when serializing version number"
             ) from e
 
         keys_needing_representation = set()