RESTRICT AUTOMERGE Updating the platform sdk version for Q

Test: Builds, boots.

Bug: 129975435
Change-Id: I98d35b36c540a258e17d18210eb4e93717abacc6
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