Validate google sso token audience

[knolleary]

Validates the audience property used to generate a google sso access token matches what we expect.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 76.84%. Comparing base (6bec3e2) to head (4e4c5b6).
⚠️ Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
forge/ee/routes/sso/social/google.js	0.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6132      +/-   ##
==========================================
- Coverage   76.85%   76.84%   -0.02%     
==========================================
  Files         381      381              
  Lines       19272    19276       +4     
  Branches     4641     4642       +1     
==========================================
  Hits        14812    14812              
- Misses       4460     4464       +4     

Flag	Coverage Δ
backend	76.84% <0.00%> (-0.02%)	⬇️

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