Bump Server version to 1.27.0

Author: temporal-data

common/headers/version_checker.go

@@ -49,7 +49,7 @@ const (
 
 	// ServerVersion value can be changed by the create-tag Github workflow.
 	// If you change the var name or move it, be sure to update the workflow.
-	ServerVersion = "1.27.0-rc.0"
+	ServerVersion = "1.27.0"
 
 	// SupportedServerVersions is used by CLI and inter role communication.
 	SupportedServerVersions = ">=1.0.0 <2.0.0"