fix: add renovate bot to OWNERS of dependency files

This will let Renovatebot automerge changes to these files.

Change-Id: I7782ec0a658fc56bb4d123ae3aaefadf5d414989
diff --git a/OWNERS b/OWNERS
index eb636b6..55ac073 100644
--- a/OWNERS
+++ b/OWNERS
@@ -1 +1,3 @@
 me@avm99963.com
+per-file package.json=renovate-bot@avm99963.com
+per-file pnpm-lock.yaml=renovate-bot@avm99963.com