feat(data-pipelines): allow pinning of hail in requirements

[rileyhgrant]

Allows pinning of hail in data-pipeline/requirements.txt, and pins it.

deployctl's start_cluster command now checks if the locally installed version of hail is the same as the version pinned in requirements.txt, and raises and error if not.

Since deployctl calls hailctl in its start_cluster command, this approach allows pinning of hail by manually checking the versions match.

[rileyhgrant]

Bumping pylint because of pylint-dev/pylint#3882

[sjahl]

Just the one thing inline re: catching an error. Normally, I'd pause before jumping from python 3.7 -> 3.9, but 3.7 is ancient, and it looks like i've been running 3.9 in my local venv for who knows how long and deployctl has worked fine!