fix mypy error

Author: Aniketsy

stubs/colorful/colorful/__init__.pyi

@@ -1,6 +1,7 @@
 from _typeshed import SupportsWrite
 from builtins import str as _str
-from typing import ContextManager, Final
+from contextlib import AbstractContextManager
+from typing import Final
 from typing_extensions import LiteralString
 
 from .core import Colorful, ColorfulString, _ColorModeType, _PaletteType
@@ -47,12 +48,12 @@ def print(
 ) -> None: ...
 def with_setup(
     colormode: _ColorModeType | None = None, colorpalette: _str | _PaletteType | None = None, extend_colors: bool = False
-) -> ContextManager[Colorful]: ...
-def with_8_ansi_colors() -> ContextManager[Colorful]: ...
-def with_16_ansi_colors() -> ContextManager[Colorful]: ...
-def with_256_ansi_colors() -> ContextManager[Colorful]: ...
-def with_true_colors() -> ContextManager[Colorful]: ...
-def with_palette(colorpalette: _str | _PaletteType) -> ContextManager[Colorful]: ...
-def with_updated_palette(colorpalette: _str | _PaletteType) -> ContextManager[Colorful]: ...
-def with_style(style_name: _str) -> ContextManager[Colorful]: ...
+) -> AbstractContextManager[Colorful]: ...
+def with_8_ansi_colors() -> AbstractContextManager[Colorful]: ...
+def with_16_ansi_colors() -> AbstractContextManager[Colorful]: ...
+def with_256_ansi_colors() -> AbstractContextManager[Colorful]: ...
+def with_true_colors() -> AbstractContextManager[Colorful]: ...
+def with_palette(colorpalette: _str | _PaletteType) -> AbstractContextManager[Colorful]: ...
+def with_updated_palette(colorpalette: _str | _PaletteType) -> AbstractContextManager[Colorful]: ...
+def with_style(style_name: _str) -> AbstractContextManager[Colorful]: ...
 def __getattr__(name: _str) -> Colorful.ColorfulStyle: ...