Update google cloud vision >= 2.0.0

[AnandInguva]

Fixes: #23261

Update google-cloud-vision dependency to >= 2.0.0

2.0.0 has some breaking changes and needed some changes to PTransforms that depend on google-cloud-vision.

For more information: https://googleapis.dev/python/vision/latest/UPGRADING.html

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[AnandInguva]

Run Python 3.8 PostCommit

[codecov]

Codecov Report

Merging #23755 (5e4c544) into master (3ab9507) will decrease coverage by 0.00%.
The diff coverage is 90.90%.

@@            Coverage Diff             @@
##           master   #23755      +/-   ##
==========================================
- Coverage   73.17%   73.17%   -0.01%     
==========================================
  Files         720      720              
  Lines       96044    96044              
==========================================
- Hits        70278    70276       -2     
- Misses      24454    24456       +2     
  Partials     1312     1312              

Flag	Coverage Δ
python	82.94% <90.90%> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
sdks/python/apache_beam/ml/gcp/visionml.py	92.59% <90.00%> (ø)
sdks/python/apache_beam/ml/gcp/visionml_test_it.py	66.66% <100.00%> (ø)
sdks/python/apache_beam/internal/gcp/auth.py	78.57% <0.00%> (-4.29%)	⬇️
...hon/apache_beam/runners/direct/test_stream_impl.py	93.28% <0.00%> (-0.75%)	⬇️
sdks/python/apache_beam/coders/coders.py	87.48% <0.00%> (+0.12%)	⬆️
...hon/apache_beam/runners/worker/bundle_processor.py	93.67% <0.00%> (+0.12%)	⬆️

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[AnandInguva]

R: @tvalentyn @ryanthompson591

[AnandInguva]

Got a green on the PostCommit and also the unittests testing the google-cloud-vision passes. Precommit failure is unrelated.

https://ci-beam.apache.org/job/beam_PostCommit_Python38_PR/656/testReport/apache_beam.ml.gcp.visionml_test_it/

[github-actions]

Stopping reviewer notifications for this pull request: review requested by someone other than the bot, ceding control

[tvalentyn]

Precommit failure is unrelated.

It's #21104

[tvalentyn]

LGTM. thank you.