Fix pkg/v1/google/auth tests for arm64

[Subserial]

Ran into this issue when testing in an environment without gcloud.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 25.00000% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 53.05%. Comparing base (8b3c303) to head (8de8d63).
⚠️ Report is 55 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/v1/google/auth.go	25.00%	2 Missing and 1 partial ⚠️

❗ There is a different number of reports uploaded between BASE (8b3c303) and HEAD (8de8d63). Click for more details.

HEAD has 1 upload less than BASE

Flag	BASE (8b3c303)	HEAD (8de8d63)
	2	1

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #2085       +/-   ##
===========================================
- Coverage   71.67%   53.05%   -18.63%     
===========================================
  Files         123      164       +41     
  Lines        9935    10940     +1005     
===========================================
- Hits         7121     5804     -1317     
- Misses       2115     4429     +2314     
- Partials      699      707        +8     

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