add dict type annotation

Author: edgchen1

tools/ci_build/github/apple/build_settings_utils.py

@@ -2,21 +2,22 @@
 
 import json
 import pathlib
+import typing
 
 _DEFAULT_BUILD_SYSROOT_ARCHS = {
     "iphoneos": ["arm64"],
     "iphonesimulator": ["arm64", "x86_64"],
 }
 
 
-def parse_build_settings_file(build_settings_file: pathlib.Path) -> dict:
+def parse_build_settings_file(build_settings_file: pathlib.Path) -> dict[str, typing.Any]:
     """
     Parses the provided build settings file into a build settings dict.
 
     :param build_settings_file: The build settings file path.
     :type build_settings_file: pathlib.Path
     :return: The build settings dict.
-    :rtype: dict[Any, Any]
+    :rtype: dict[str, Any]
     """
     with open(build_settings_file) as f:
         build_settings_data = json.load(f)