### Apache Airflow Provider(s)

snowflake

### Versions of Apache Airflow Providers

apache-airflow-providers-snowflake==2.2.0 

### Apache Airflow version

2.2.0

### Operating System

Linux-5.4.141-67.229.amzn2.x86_64-x86_64-with-glibc2.31

### Deployment

Astronomer

### Deployment details

_No response_

### What happened

The `get_connection()` method is called twice in the SnowflakeHook, initializing the connection twice and slowing the hook down. See the following example logs on a single `run` of the SnowflakeHook:


<img width="1383" alt="Screen Shot 2021-11-09 at 9 59 26 PM" src="https://user-images.githubusercontent.com/30101670/141052877-648a5543-cf9a-4c16-82a6-02f6b62b47ba.png">



### What you expected to happen

The code is using the `get_connection` method on [line 271](https://github.com/apache/airflow/blob/main/airflow/providers/snowflake/hooks/snowflake.py#L271) and then calling the method again on [line 272](https://github.com/apache/airflow/blob/main/airflow/providers/snowflake/hooks/snowflake.py#L272)

### How to reproduce

Run the SnowflakeHook

### Anything else

_No response_

### Are you willing to submit PR?

- [X] Yes I am willing to submit a PR!

### Code of Conduct

- [X] I agree to follow this project's [Code of Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)

airflow/providers/snowflake/hooks/snowflake.py
"""
        One method to fetch connection params as a dict
        used in get_uri() and get_connection()
        """
        conn = self.get_connection(self.snowflake_conn_id)  
        account = conn.extra_dejson.get('extra__snowflake__account', '') or conn.extra_dejson.get(
            'account', ''
        )
        warehouse = conn.extra_dejson.get('extra__snowflake__warehouse', '') or conn.extra_dejson.get(
            'warehouse', ''
        )
        database = conn.extra_dejson.get('extra__snowflake__database', '') or conn.extra_dejson.get(
            'database', ''
        )
        region = conn.extra_dejson.get('extra__snowflake__region', '') or conn.extra_dejson.get('region', '')
        role = conn.extra_dejson.get('extra__snowflake__role', '') or conn.extra_dejson.get('role', '')
        schema = conn.schema or ''
        authenticator = conn.extra_dejson.get('authenticator', 'snowflake')
        session_parameters = conn.extra_dejson.get('session_parameters')
        conn_config = {
            "user": conn.login,
            "password": conn.password or '',
            "schema": self.schema or schema,
            "database": self.database or database,
            "account": self.account or account,