fix(tags): import Self from typing for Python 3.11+

Author: noirbizarre

commitizen/tags.py

@@ -1,15 +1,14 @@
 from __future__ import annotations
 
 import re
+import sys
 import warnings
 from collections.abc import Sequence
 from dataclasses import dataclass, field
 from functools import cached_property
 from string import Template
 from typing import TYPE_CHECKING, NamedTuple
 
-from typing_extensions import Self
-
 from commitizen import out
 from commitizen.defaults import DEFAULT_SETTINGS, Settings, get_tag_regexes
 from commitizen.git import GitTag
@@ -24,6 +23,12 @@
 if TYPE_CHECKING:
     from commitizen.version_schemes import VersionScheme
 
+    # Self is Python 3.11+ but backported in typing-extensions
+    if sys.version_info < (3, 11):
+        from typing_extensions import Self
+    else:
+        from typing import Self
+
 
 class VersionTag(NamedTuple):
     """Represent a version and its matching tag form."""