Remove postgres extra from Helm tests venv (#25921)
Remove postgres extra from Helm tests venv (#25921)

We do not need postgres extra when running Helm tests. The tests
started to fail because we switch to a binary postgres dependency
for postgres provider ad it started to fail because of lack of
pgconfig, but we actually do not need the extra to run the tests
so we can remove it.
nathanielvarona/airflow,apache/airflow,cfei18/incubator-airflow,cfei18/incubator-airflow,apache/airflow,cfei18/incubator-airflow,nathanielvarona/airflow,apache/airflow,apache/airflow,nathanielvarona/airflow,cfei18/incubator-airflow,apache/airflow,nathanielvarona/airflow,nathanielvarona/airflow,apache/airflow,cfei18/incubator-airflow,cfei18/incubator-airflow,nathanielvarona/airflow