Remove PT004 from lint.ignore rules

Author: HayaoSuzuki

pyproject.toml

@@ -126,7 +126,6 @@ lint.ignore = [
   "PLR0913",
   "PLR2004",
   "PLW2901",
-  "PT004",
   "PT012",
   "PT013",
   "PTH118",

pytest_httpserver/httpserver.py

@@ -22,7 +22,6 @@
 from typing import TYPE_CHECKING
 from typing import Any
 from typing import ClassVar
-from typing import Union
 
 import werkzeug.http
 from werkzeug import Request
@@ -46,10 +45,7 @@
 URI_DEFAULT = ""
 METHOD_ALL = "__ALL"
 
-HEADERS_T = Union[
-    Mapping[str, str | Iterable[str]],
-    Iterable[tuple[str, str]],
-]
+HEADERS_T = Mapping[str, str | Iterable[str]] | Iterable[tuple[str, str]]
 
 HVMATCHER_T = Callable[[str, str | None, str], bool]