Fixes ROVIDERS -> PROVIDERS typo in Dockerfile (apache#11738)

There was a typo in the original file when review was made in
the apache#11529 but apparently this typo was still left in one place
and as the result, providers have not been installed in the
master Dockerfile.

Fixes apache#11695

Airflow 2.0.0-alpha1

Fixed month in backport packages to October (apache#11242)

Fixed month in backport packages to October (apache#11242)

Airflow 1.10.12

Airflow 1.10.12rc4

Airflow Version 1.10.12rc3

Airflow 1.10.12rc2

Updating constraints. Build id: 209987675

This update in constraints is automatically committed
by the CI 'constraints-push' step based on
HEAD of 'v1-10-test' in 'apache/airflow'
with commit sha f487f2f

All tests passed in this build so we determined we can push the updated constraints.

See https://github.com/apache/airflow/blob/master/README.md#installing-from-pypi for details.

Note! This was manually updated by Jarek Potiuk as
the build failed in one testi transiently and it was
just before the release of 1.10.12.

Airflow 1.10.12rc1