`Pusher.png` mistakenly labeled as "InfraValidator"

[yumemio]

The label on the orange box in images/Pusher.png is incorrect - it says "InfraValidator", but it should be "Pusher" instead.

This image is used in the workshops/tfx-caip-tf23/lab-01-tfx-walkthrough/labs/lab-01.ipynb notebook.