Merge pull request swiftlang#11332 from charles-zablit/charles-zablit/lldb/fix-3.9-feature-to-21.x

🍒 [lldb] fix Python 3.9+ specific typing annotations (llvm#156868)

Author: charles-zablit

lldb/packages/Python/lldbsuite/test/decorators.py

@@ -1,4 +1,8 @@
 # System modules
+
+# allow the use of the `list[str]` type hint in Python 3.8
+from __future__ import annotations
+
 from functools import wraps
 from packaging import version
 import ctypes