fix ruff error

methane · methane · commit 1ed7cffc0335 · 2023-11-15T14:39:52.000+09:00
diff --git a/pyproject.toml b/pyproject.toml
@@ -57,6 +57,7 @@ line-length = 99
 exclude = [
     "pymysql/tests/thirdparty",
 ]
+ignore = ["E721"]
 
 [tool.pdm.dev-dependencies]
 dev = [
