Google CLA failure on all Pull Requests

[holtskinner]

Issue source: https://github.com/GoogleCloudPlatform/generative-ai/commit/c2b2a75031646167fb04cec187504e41dec4e710

Commit message includes:

---------

Co-authored-by: Megha Agarwal 
Co-authored-by: Polong Lin <[email protected]>

Co-author Megha Agarwal doesn't have an email added (should be <[email protected]> )

However, updating this commit message is a breaking change that requires significant effort to rebase all commits after this.

[holtskinner]

@meredithslota We had discussed this last year, is there anything that could be done to change the specific commit message, but not require a full rebasing?

[meredithslota]

Followed up on internal bug.