[stdlib] Add missing Final (#14613)

stdlib/msilib/sequence.pyi

@@ -1,13 +1,14 @@
 import sys
+from typing import Final
 from typing_extensions import TypeAlias
 
 if sys.platform == "win32":
     _SequenceType: TypeAlias = list[tuple[str, str | None, int]]
 
-    AdminExecuteSequence: _SequenceType
-    AdminUISequence: _SequenceType
-    AdvtExecuteSequence: _SequenceType
-    InstallExecuteSequence: _SequenceType
-    InstallUISequence: _SequenceType
+    AdminExecuteSequence: Final[_SequenceType]
+    AdminUISequence: Final[_SequenceType]
+    AdvtExecuteSequence: Final[_SequenceType]
+    InstallExecuteSequence: Final[_SequenceType]
+    InstallUISequence: Final[_SequenceType]
 
-    tables: list[str]
+    tables: Final[list[str]]