google pub/sub updates and fixes

[jaredwray]

Please check if the PR fulfills these requirements

• Followed the Contributing guidelines.
• Tests for the changes have been added (for bug fixes/features) with 100% code coverage.
• Docs have been added / updated (for bug fixes / features)

What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)
google pub/sub updates and fixes

[codecov]

Codecov Report

Attention: Patch coverage is 88.05970% with 8 lines in your changes missing coverage. Please review.

Project coverage is 99.15%. Comparing base (db50a0d) to head (91a29ba).

Files with missing lines	Patch %	Lines
src/airhorn.ts	38.46%	8 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##              main     #362      +/-   ##
===========================================
- Coverage   100.00%   99.15%   -0.85%     
===========================================
  Files           20       20              
  Lines          890      945      +55     
  Branches       208      215       +7     
===========================================
+ Hits           890      937      +47     
- Misses           0        8       +8     

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