[ci skip] fix: update codeowners

Author: Lulalaby

.github/CODEOWNERS

@@ -1,8 +1,8 @@
 * @Pycord-Development/maintainers
 
-/tests/ @Pycord-Development/maintain-tests
-/discord/ext/testing/ @Pycord-Development/maintain-tests
-/discord/ext/bridge/ @Pycord-Development/maintain-ext-bridge
+/tests/ @Pycord-Development/maintain-tests @Pycord-Development/maintainers
+/discord/ext/testing/ @Pycord-Development/maintain-tests @Pycord-Development/maintainers
+/discord/ext/bridge/ @Pycord-Development/maintain-ext-bridge @Pycord-Development/maintainers
 /.github/ @Pycord-Development/maintainers @Lulalaby
 /docs/locales/ @Pycord-Development/maintain-translations
 /docs/build/locales/ @Pycord-Development/maintain-translations