Update Xcode for macOS 11 and 12

Switch from Xcode 13.0 to 13.2.1 to update the macOS SDK from 11.3 to
12.1. This is needed for bots that use this receipe, like PDFium Mac
bots, after crrev.com/1154867 made macOS 12 mandatory. This also has the
effect of updating the iOS SDK from 15.0 to 15.2.

Change-Id: I4c91b2c23bd8eaacac6cef6afe71fed3533fd838
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/4605813
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Lindsay Pasricha <lindsayw@chromium.org>

recipes/recipe_modules/osx_sdk/api.py

@@ -30,7 +30,7 @@ _DEFAULT_VERSION_MAP = [
   ('10.14.3', '10g8'),
   ('10.14.4', '11b52'),
   ('10.15.4', '12d4e'),
-  ('11.3', '13a233'),
+  ('11.3', '13c100'),
   ('13.3', '14c18')
 ]