[backend] update migration file version

openbas-api/src/main/java/io/openbas/migration/V3_39__Add_reports_tables.java → openbas-api/src/main/java/io/openbas/migration/V3_40__Add_reports_tables.java

@@ -8,7 +8,7 @@
 import java.sql.Statement;
 
 @Component
-public class V3_39__Add_reports_tables extends BaseJavaMigration {
+public class V3_40__Add_reports_tables extends BaseJavaMigration {
     @Override
     public void migrate(Context context) throws Exception {
         Connection connection = context.getConnection();