rv: Add Gabriele Monaco as maintainer for Runtime Verification

Gabriele will start taking over managing the changes to the Runtime
Verification. Make him officially one of the maintainers.

Cc: Gabriele Monaco <gmonaco@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/20250911115744.66ccade3@gandalf.local.home
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>