**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
session = boto3.session.Session(region_name=region_name)
        return session, None
    def get_client_type(
        self,
        client_type: str,
        region_name: Optional[str] = None,
        config: Optional[Config] = None,
    ) -> boto3.client:
        """Get the underlying boto3 client using boto3 session"""
        session, endpoint_url = self._get_credentials(region_name)
        
        
        if config is None:
            config = self.config
        return session.client(client_type, endpoint_url=endpoint_url, config=config, verify=self.verify)
    def get_resource_type(
        self,
        resource_type: str,
        region_name: Optional[str] = None,
        config: Optional[Config] = None,
    ) -> boto3.resource:
        """Get the underlying boto3 resource using boto3 session"""
        session, endpoint_url = self._get_credentials(region_name)
        
        
        if config is None:
            config = self.config
        return session.resource(resource_type, endpoint_url=endpoint_url, config=config, verify=self.verify)
    @cached_property
    def conn(self) -> Union[boto3.client, boto3.resource]: