Use lowercase tuple where possible (#6170)

stdlib/imp.pyi

@@ -1,7 +1,7 @@
 import types
 from _typeshed import StrPath
 from os import PathLike
-from typing import IO, Any, Protocol, Tuple, TypeVar
+from typing import IO, Any, Protocol, TypeVar
 
 from _imp import (
     acquire_lock as acquire_lock,
@@ -33,7 +33,7 @@ def get_magic() -> bytes: ...
 def get_tag() -> str: ...
 def cache_from_source(path: StrPath, debug_override: bool | None = ...) -> str: ...
 def source_from_cache(path: StrPath) -> str: ...
-def get_suffixes() -> list[Tuple[str, str, int]]: ...
+def get_suffixes() -> list[tuple[str, str, int]]: ...
 
 class NullImporter:
     def __init__(self, path: StrPath) -> None: ...
@@ -53,12 +53,12 @@ class _FileLike(Protocol):
 def load_source(name: str, pathname: str, file: _FileLike | None = ...) -> types.ModuleType: ...
 def load_compiled(name: str, pathname: str, file: _FileLike | None = ...) -> types.ModuleType: ...
 def load_package(name: str, path: StrPath) -> types.ModuleType: ...
-def load_module(name: str, file: _FileLike | None, filename: str, details: Tuple[str, str, int]) -> types.ModuleType: ...
+def load_module(name: str, file: _FileLike | None, filename: str, details: tuple[str, str, int]) -> types.ModuleType: ...
 
 # IO[Any] is a TextIOWrapper if name is a .py file, and a FileIO otherwise.
 def find_module(
     name: str, path: None | list[str] | list[PathLike[str]] | list[StrPath] = ...
-) -> Tuple[IO[Any], str, Tuple[str, str, int]]: ...
+) -> tuple[IO[Any], str, tuple[str, str, int]]: ...
 def reload(module: types.ModuleType) -> types.ModuleType: ...
 def init_builtin(name: str) -> types.ModuleType | None: ...
 def load_dynamic(name: str, path: str, file: Any = ...) -> types.ModuleType: ...  # file argument is ignored