fix: oss bulk update missing transaction calls

packages/nocodb/src/db/BaseModelSqlv2.ts

@@ -5699,7 +5699,7 @@ class BaseModelSqlv2 {
       trx?: any;
     } = {},
   ) {
-    const transaction = trx ?? (await this.dbDriver.transaction());
+    let transaction;
     try {
       const columns = await this.model.getColumns(this.context);
 
@@ -5710,6 +5710,8 @@ class BaseModelSqlv2 {
         }
       }
 
+      transaction = trx ?? (await this.dbDriver.transaction());
+
       const updateDatas = raw
         ? datas
         : await Promise.all(