Update manifest to use arcvm13-5.15 and android13-5.15-arcvm

We're no longer using the arcvm-modules repo but instead branching off
android13-5.15 common-modules. Also we created a new arcvm13-5.15 branch
to start fresh.

Bug: 302040050
Test: repo sync --nmu -j4
Change-Id: Ie6d38223fb9a0994f1a7605e6d09e89c2b84c98d
1 file changed
tree: fff155ed6de93508e4db28496980db28fc5cc3c7
  1. default.xml
  2. OWNERS