**Apache Airflow version**:

2.1.0

**Environment**:

- self hosted docker-compose based stack

**What happened**:

Using JDBCOperator if the sql result in an error we got only 
```
[2021-06-21 11:05:55,377] {local_task_job.py:151} INFO - Task exited with return code 1
```

Before upgrading from 2.0.1 we got error details in logs:
```
jaydebeapi.DatabaseError: java.sql.SQLException:... [MapR][DrillJDBCDriver](500165) Query execution error. Details: VALIDATION ERROR:...
``` 

**What you expected to happen**:

See `SQLException` in logs

**How to reproduce it**:

Perform a generic SQL task with broken SQL.

**Anything else we need to know**:

I think is somehow related to https://github.com/apache/airflow/commit/abcd48731303d9e141bdc94acc2db46d73ccbe12#diff-4fd3febb74d94b2953bf5e9b4a981b617949195f83d96f4a589c3078085959b7R202 
airflow/models/taskinstance.py
self,
                item: str,
            ):
                return Connection.get_connection_from_secrets(item)
            @staticmethod
            def get(
                item: str,
                default_conn: Any = None,
            ):
                """Get Airflow Connection value"""
                try:
                    return Connection.get_connection_from_secrets(item)
                except AirflowNotFoundException:
                    return default_conn
        return {
            'conf': conf,
            'dag': task.dag,
            'dag_run': dag_run,
            'ds': ds,
            'ds_nodash': ds_nodash,
            'execution_date': pendulum.instance(self.execution_date),
            'inlets': task.inlets,
            'macros': macros,
            'next_ds': next_ds,
            'next_ds_nodash': next_ds_nodash,
            'next_execution_date': next_execution_date,
            'outlets': task.outlets,