chore(deps): update dependency apache-airflow-providers-google to v6.6.0 (#7617)
chore(deps): update dependency apache-airflow-providers-google to v6.6.0 (#7617)

Co-authored-by: Anthonios Partheniou <50de7473c4bcd6fb06c46bebfdc91e30df56824a@google.com>
Co-authored-by: Charles Engelke <2f8855ae1777b7825ea5c6a2e808e18e09aa7e61@google.com>
GoogleCloudPlatform/python-docs-samples,GoogleCloudPlatform/python-docs-samples,GoogleCloudPlatform/python-docs-samples,GoogleCloudPlatform/python-docs-samples