SONAR-12146 mark DB migration as blue/green compatible

server/sonar-db-migration/src/main/java/org/sonar/server/platform/db/migration/version/v78/RemoveOrphansFromProjectBranches.java

@@ -21,9 +21,11 @@ package org.sonar.server.platform.db.migration.version.v78;
 
 import java.sql.SQLException;
 import org.sonar.db.Database;
+import org.sonar.server.platform.db.migration.SupportsBlueGreen;
 import org.sonar.server.platform.db.migration.step.DataChange;
 import org.sonar.server.platform.db.migration.step.MassUpdate;
 
+@SupportsBlueGreen
 public class RemoveOrphansFromProjectBranches extends DataChange {
   public RemoveOrphansFromProjectBranches(Database db) {
     super(db);