The PostCommit TransformService Direct job is flaky

[github-actions]

The PostCommit TransformService Direct is failing over 50% of the time
Please visit https://github.com/apache/beam/actions/workflows/beam_PostCommit_TransformService_Direct.yml?query=is%3Afailure+branch%3Amaster to see the logs.

[liferoad]

#30816 breaks the build here.

#10 43.81 INFO: pip is looking at multiple versions of apache-beam[dataframe,gcp] to determine which version is compatible with other requirements. This could take a while.
#10 43.81 ERROR: Cannot install apache-beam[dataframe,gcp]==2.56.0.dev0 because these package versions have conflicting dependencies.
#10 43.81 
#10 43.81 The conflict is caused by:
#10 43.81     apache-beam[dataframe,gcp] 2.56.0.dev0 depends on google-auth-httplib2<0.2.0 and >=0.1.0; extra == "gcp"
#10 43.81     The user requested (constraint) google-auth-httplib2==0.2.0

we have 'google-auth-httplib2>=0.1.0,<0.2.0' in https://github.com/apache/beam/blob/master/sdks/python/setup.py#L445 .

[github-actions]

Reopening since the workflow is still flaky

[github-actions]

Reopening since the workflow is still flaky

[Abacn]

a random bigtableio_it_test test failing a time, looks like the tests having racing condition running in parallel on same machine (port occupied?)

[github-actions]

Reopening since the workflow is still flaky