[AIRFLOW-6312] Unpin marshmallow-sqlalchemy for Py>3.5 (apache#6861)

[AIRFLOW-6312] Unpin marshmallow-sqlalchemy for Py>3.5 (apache#6861)

[AIRFLOW-XXX] Update Changelog

[AIRFLOW-XXX] Update version to 1.10.7

[AIRFLOW-XXX] Update date in changelog

[AIRFLOW-XXX] Update date in changelog

[AIRFLOW-XXX] Update version to 1.10.6

[AIRFLOW-XXX] Bump version to 1.10.5

[AIRFLOW-XXX] Bump version to 1.10.5

[AIRFLOW-XXX] Update changelog for 1.10.4rc5