Pygments: fix get_style_by_name return type (#9803)

Author: nwalters512

stubs/Pygments/pygments/styles/__init__.pyi

@@ -1,12 +1,12 @@
 from _typeshed import Incomplete
 from collections.abc import Iterator, Mapping
 
-from pygments.style import StyleMeta
+from pygments.style import Style
 from pygments.util import ClassNotFound as ClassNotFound
 
 STYLE_MAP: Mapping[str, str]
 
-def get_style_by_name(name) -> StyleMeta: ...
+def get_style_by_name(name) -> type[Style]: ...
 def get_all_styles() -> Iterator[str]: ...
 
 # Having every style class here doesn't seem to be worth it