chore: update CODEOWNERS to reflect new team ownership

Author: diegomarquezp

.github/CODEOWNERS

@@ -5,14 +5,14 @@
 # https://help.github.com/en/github/creating-cloning-and-archiving-repositories/about-code-owners#codeowners-syntax
 
 # The @googleapis/cloud-native-db-dpes @googleapis/api-datastore-sdk @googleapis/api-firestore-partners is the default owner for changes in this repo
-*                       @googleapis/yoshi-java @googleapis/cloud-native-db-dpes @googleapis/api-datastore-sdk @googleapis/api-firestore-partners
+*                       @googleapis/cloud-java-team-teamsync @googleapis/cloud-native-db-dpes @googleapis/api-datastore-sdk @googleapis/api-firestore-partners
 
 # for handwritten libraries, keep codeowner_team in .repo-metadata.json as owner
-**/*.java               @googleapis/yoshi-java @googleapis/cloud-native-db-dpes @googleapis/api-datastore-sdk @googleapis/api-firestore-partners
+**/*.java                @googleapis/cloud-java-team-teamsync @googleapis/cloud-native-db-dpes @googleapis/api-datastore-sdk @googleapis/api-firestore-partners
 
 
 # The java-samples-reviewers team is the default owner for samples changes
-samples/**/*.java       @googleapis/yoshi-java @googleapis/java-samples-reviewers
+samples/**/*.java        @googleapis/cloud-java-team-teamsync @googleapis/java-samples-reviewers
 
 # Generated snippets should not be owned by samples reviewers
-samples/snippets/generated/       @googleapis/yoshi-java
+samples/snippets/generated/        @googleapis/cloud-java-team-teamsync