[Stackadapt Audiences] - API / Schema upgrade

[joe-ayoub-segment]

This PR was originally raised by Stackadapt here. #2874

I copied the PR and fixed a couple of things from that PR:

• I fixed the breaking Snapshot tests.
• I removed the changes to the yarn.lock and package.json files

Original PR summary below:
_A summary of your pull request, including the what change you're making and why.

When calling upsertProfileMapping mutation, there's an argument mapping_schema which takes a JSON blob. We are migrating it to mapping_schema_v2. It has defined GQL types for better validation and security.
It won't cause any issue if you keep using mapping_schema, but we want to deprecate mapping_schema at some point.
update field mapping to include label_

Testing

Hi @Vanessa-SSY - can you please comment provide the folowing?

1. provide some evidence of testing the new code.
2. Indicate that you are happy for the new code to be deployed.

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 77.86%. Comparing base (05317de) to head (3ff7308).
Report is 18 commits behind head on main.

Files with missing lines	Patch %	Lines
...s/stackadapt-audiences/forwardProfile/functions.ts	50.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2899   +/-   ##
=======================================
  Coverage   77.86%   77.86%           
=======================================
  Files        1049     1049           
  Lines       19450    19450           
  Branches     3814     3814           
=======================================
  Hits        15145    15145           
  Misses       2965     2965           
  Partials     1340     1340           

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[Vanessa-SSY]

Looks good to me! Thanks @joe-ayoub-segment
I did unit testing by running the test locally. I think we can use the Event Tester to try it out but I lost the link to the dev instance.

[joe-ayoub-segment]

Thanks @Vanessa-SSY - any chance you could do a quick test and attach a screenshot? If something were to go wrong after we deploy it can take some time to roll back (and it would be a lot of effort). It's worth de-risking with an end to end local test first.

After that this PR is ready to deploy

[Vanessa-SSY]

LOCAL TESTING RESULT:

CC @joe-ayoub-segment