chore: update code owners or pricing (supabase#36499)

Allow billing team to approve/make changes

Author: kevcodez

.github/CODEOWNERS

@@ -1,6 +1,6 @@
 /packages/ui/  @supabase/design
-/packages/shared-data/pricing.ts @roryw10 @kevcodez
-/packages/shared-data/plans.ts @roryw10 @kevcodez
+/packages/shared-data/pricing.ts @roryw10 @supabase/billing
+/packages/shared-data/plans.ts @roryw10 @supabase/billing
 /packages/common/telemetry-constants.ts @4L3k51 @supabase/growth-eng
 
 /apps/studio/ @supabase/Dashboard