Update 2.2.0 changelog for b2 (#18417)
Update 2.2.0 changelog for b2 (#18417)


cfei18/incubator-airflow,mistercrunch/airflow,cfei18/incubator-airflow,danielvdende/incubator-airflow,lyft/incubator-airflow,cfei18/incubator-airflow,apache/incubator-airflow,nathanielvarona/airflow,apache/incubator-airflow,Acehaidrey/incubator-airflow,lyft/incubator-airflow,mistercrunch/airflow,Acehaidrey/incubator-airflow,mistercrunch/airflow,apache/airflow,bolkedebruin/airflow,danielvdende/incubator-airflow,bolkedebruin/airflow,bolkedebruin/airflow,apache/incubator-airflow,Acehaidrey/incubator-airflow,nathanielvarona/airflow,cfei18/incubator-airflow,Acehaidrey/incubator-airflow,danielvdende/incubator-airflow,apache/airflow,apache/airflow,Acehaidrey/incubator-airflow,danielvdende/incubator-airflow,nathanielvarona/airflow,apache/airflow,mistercrunch/airflow,cfei18/incubator-airflow,danielvdende/incubator-airflow,nathanielvarona/airflow,apache/airflow,bolkedebruin/airflow,nathanielvarona/airflow,lyft/incubator-airflow,lyft/incubator-airflow,nathanielvarona/airflow,apache/incubator-airflow,bolkedebruin/airflow,cfei18/incubator-airflow,Acehaidrey/incubator-airflow,danielvdende/incubator-airflow,apache/airflow