internal/relui/groups: update release team group

We use our policy group for Go release workflows.

For golang/go#68114.

Change-Id: I2cb31682c1072e0b2f2908d05054831ca6987bd0
Reviewed-on: https://go-review.googlesource.com/c/build/+/607795
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Roland Shoemaker <roland@golang.org>

internal/relui/groups/groups.go

@@ -11,7 +11,7 @@ package groups
 // https://chrome-infra-auth.appspot.com/auth/groups/.
 
 const (
-	ReleaseTeam  = "mdb/golang-release-team"
+	ReleaseTeam  = "mdb/golang-release-eng-policy"
 	SecurityTeam = "mdb/golang-security-policy"
 	ToolsTeam    = "mdb/go-tools-team"
 	GolangTeam   = "mdb/golang-team"