**Apache Airflow version**: 1.10.8 (Patched with latest AWS Hook)

**Environment**:

- **Cloud provider or hardware configuration**: 4 VCPU 8GB RAM VM
- **OS** (e.g. from /etc/os-release): RHEL 7.7
- **Kernel** (e.g. `uname -a`): Linux 3.10.0-957.el7.x86_64
- **Install tools**:
- **Others**:
The AWS Hook functionality for AssumeRoleWithSAML is not available in this version, we manually added it via patching the hook file.

**What happened**:
We've been using this hook for a while now with this issue, basically sts.assume_role and sts.assume_role_with_saml will return temporary credentials that are only valid for eg 1 hour by default. Eventually with long running operators / hooks / sensors some of them fail because the credentials have expired.

Example error messages
An error occurred (ExpiredTokenException) when calling the AssumeRole operation: Response has expired
An error occurred (ExpiredTokenException) when calling the AssumeRoleWithSAML operation: Response has expired
botocore.exceptions.ClientError: An error occurred (ExpiredTokenException) when calling the <any operation here> operation: The security token included in the request is expired

**What you expected to happen**:

AWS hook should be updated to use boto3 RefreshableCredentials when temporary credentials are in use.

**How to reproduce it**:

Use any of the assume role methods with the AWS Hook, create a session, wait 1 hour (or whatever expiry period applies to your role), and try and use the hook again.

**Anything else we need to know**:

I have a solution, please self-assign this.
airflow/providers/amazon/aws/hooks/base_aws.py
)
            return boto3.session.Session(
                region_name=session.region_name,
                botocore_session=botocore_session,
                **session_kwargs,
            )
        else:
            raise NotImplementedError(
                f'assume_role_method={assume_role_method} in Connection {self.conn.conn_id} Extra.'
                'Currently "assume_role" or "assume_role_with_saml" are supported.'
                '(Exclude this setting will default to "assume_role").'
            )
        
        credentials = sts_response["Credentials"]
        aws_access_key_id = credentials["AccessKeyId"]
        aws_secret_access_key = credentials["SecretAccessKey"]
        aws_session_token = credentials["SessionToken"]
        self.log.info(
            "Creating session with aws_access_key_id=%s region_name=%s",
            aws_access_key_id,
            session.region_name,
        )
        return boto3.session.Session(
            aws_access_key_id=aws_access_key_id,
            aws_secret_access_key=aws_secret_access_key,
            region_name=session.region_name,
            aws_session_token=aws_session_token,
            **session_kwargs,
        )
    def _read_role_arn_from_extra_config(self) -> Optional[str]: