Upgrade some typing bits

Author: andrewshadura

git_crecord/crpatch.py

@@ -14,7 +14,8 @@
 import re
 from codecs import register_error
 from gettext import gettext as _
-from typing import IO, Iterator, Optional, Sequence, Union
+from typing import IO, Optional, Union
+from collections.abc import Iterator, Sequence
 
 from .util import unwrap_filename
 

git_crecord/util.py

@@ -69,7 +69,7 @@ def system(cmd, cwd=None, onerr=None, errprefix=None):
 def systemcall(
     cmd: Sequence[str] | Sequence[bytes],
     encoding: str,
-    dir: Optional[os.PathLike | str] = None,
+    dir: os.PathLike | str | None = None,
     onerr=None,
     errprefix=None,
 ) -> str:
@@ -79,7 +79,7 @@ def systemcall(
 @overload
 def systemcall(
     cmd: Sequence[str] | Sequence[bytes],
-    dir: Optional[os.PathLike | str] = None,
+    dir: os.PathLike | str | None = None,
     onerr=None,
     errprefix=None,
 ) -> bytes: