Revert "Revert "Updating the platform sdk version for Q""

This reverts commit 842119ab3a47f725ddbe727da9767637fd250a08.

Reason for revert: Rolling forward for Q-Finalization

Bug: 129975435
Bug: 129943426
Test: Build
Change-Id: I651e3ec68a765d3867be5341751cd536ccbe604a
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index 70fc57a..8b43a7d 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -121,7 +121,7 @@
   # When you increment the PLATFORM_SDK_VERSION please ensure you also
   # clear out the following text file of all older PLATFORM_VERSION's:
   # cts/tests/tests/os/assets/platform_versions.txt
-  PLATFORM_SDK_VERSION := 28
+  PLATFORM_SDK_VERSION := 29
 endif
 .KATI_READONLY := PLATFORM_SDK_VERSION