chore: replace old go teams with cloud-sdk-go-team

.github/CODEOWNERS

diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS
index 7a7bc32..26b54c3 100644
--- a/.github/CODEOWNERS
+++ b/.github/CODEOWNERS
@@ -1,7 +1,7 @@
 # Default owner for all directories not owned by others
-* @googleapis/cloud-sdk-go-eng
+* @googleapis/cloud-sdk-go-team
 
 # Also give @yoshi-approver owners for all generated files.
-*.json @yoshi-approver @googleapis/cloud-sdk-go-eng
-*-gen.go @yoshi-approver @googleapis/cloud-sdk-go-eng
+*.json @yoshi-approver @googleapis/cloud-sdk-go-team
+*-gen.go @yoshi-approver @googleapis/cloud-sdk-go-team