workshops/tfx-caip-tf23/lab-02-tfx-pipeline lab's last two checkpoints cannot be satisfied

[MrCsabaToth]

The last two lab checkpoints are about creating the pipeline, and then creating the pipeline run, which both can be done regardless if the run succeeds or not.

[MrCsabaToth]

Note, that if I use us-central1-a zone and location instead of the randomly picked zone/location by the lab it succeeds. So somewhere in the lab checkpoint check code us-central1-a left hard-coded instead of the variable