chore: Use mobile platform teams in CODEOWNERS (#6951)

* chore: Use mobile platform teams in CODEOWNERS
Co-Authored-By: Chris Aigner <christoph.aigner@sentry.io>

* chore: Keep lucas-zimerman as a named code owner
Co-Authored-By: Chris Aigner <christoph.aigner@sentry.io>

---------

Co-authored-by: sentry-junior[bot] <264270552+sentry-junior[bot]@users.noreply.github.com>

Author: sentry-junior[bot]

.github/CODEOWNERS

@@ -1,4 +1,4 @@
-*       @alwx @antonis @lucas-zimerman
+*       @getsentry/team-mobile-cross-platform-sdks @lucas-zimerman
 
-# Public API surface — also request a mobile SDK team review on API changes
-/packages/core/etc/sentry-react-native.api.md @alwx @antonis @lucas-zimerman @getsentry/team-mobile
+# Public API surface — also request Android and Apple SDK team reviews on API changes
+/packages/core/etc/sentry-react-native.api.md @getsentry/team-mobile-cross-platform-sdks @lucas-zimerman @getsentry/team-mobile-android-sdk @getsentry/team-mobile-apple-sdk