DO NOT MERGE ANYWHERE - Update master-bluetooth to use main branch.

Bug: b/289400079
Change-Id: I0bcffa60ce94416e212ff1afcbf95213f3cc3f99
diff --git a/default.xml b/default.xml
index 428c836..c3eee96 100644
--- a/default.xml
+++ b/default.xml
@@ -4,7 +4,7 @@
   <remote  name="aosp"
            fetch=".."
            review="https://android-review.googlesource.com/" />
-  <default revision="master"
+  <default revision="main"
            remote="aosp"
            sync-j="4" />