[AIRFLOW-5167] Rolling dependencies for GCP

[rayrrr]

As a potential fix to https://issues.apache.org/jira/browse/AIRFLOW-5167 this commit changes outdated hard-pinned dependencies to rolling dependencies.

While both pinned and rolling have their pros and cons, in this situation, it might be best to just deal with the bugs from rolling breaking changes as they pop up.

Alternately, we should re-pin from time to time with totally hard-pinned deps. What we currently have here is a mix, so it should change one way or the other.

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Issue link: AIRFLOW-5167

• Description above provides context of the change
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• Relevant documentation is updated including usage instructions.
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^* For document-only changes commit message can start with [AIRFLOW-XXXX].

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[boring-cyborg]

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[codecov-io]

Codecov Report

Merging #7116 into master will decrease coverage by 0.26%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #7116      +/-   ##
==========================================
- Coverage   85.23%   84.96%   -0.27%     
==========================================
  Files         682      683       +1     
  Lines       39045    39155     +110     
==========================================
- Hits        33280    33269      -11     
- Misses       5765     5886     +121

Impacted Files	Coverage Δ
airflow/kubernetes/volume_mount.py	44.44% <0%> (-55.56%)	⬇️
airflow/kubernetes/volume.py	52.94% <0%> (-47.06%)	⬇️
airflow/kubernetes/pod_launcher.py	45.25% <0%> (-46.72%)	⬇️
airflow/kubernetes/refresh_config.py	50.98% <0%> (-23.53%)	⬇️
...rflow/contrib/operators/kubernetes_pod_operator.py	78.04% <0%> (-20.71%)	⬇️
airflow/serialization/serialized_objects.py	90.03% <0%> (-0.69%)	⬇️
airflow/sensors/external_task_sensor.py	85.52% <0%> (-0.44%)	⬇️
airflow/www/views.py	76.07% <0%> (-0.13%)	⬇️
airflow/models/dag.py	90.86% <0%> (-0.03%)	⬇️
airflow/kubernetes/worker_configuration.py	99.29% <0%> (-0.01%)	⬇️
... and 7 more

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[boring-cyborg]

Awesome work, congrats on your first merged pull request!

[rayrrr]

Thanks for the quick review and merge!

[kaxil]

Thanks for the quick review and merge!

No problem. Thanks for the PR