Prevent access token writen to config file if stored in keyring

[willvedd]

🔧 Changes

This PR corrects a fairly innocuous, yet faulty error check when storing access token to the keyring. We want to write the access token to the config file as a backup if we're unable to successfully write to the keyring. As it exists now, the token will be written to the config file only if the keyring storage succeeds.

🔬 Testing

Manual verification; unable to adequately test the token regeneration function at this time.

📝 Checklist

• All new/changed/fixed functionality is covered by tests (or N/A)
• I have added documentation for all new/changed functionality (or N/A)

[codecov-commenter]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (63ccef0) 72.45% compared to head (4c4f591) 72.42%.
Report is 1 commits behind head on main.

Files	Patch %	Lines
internal/config/tenant.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #919      +/-   ##
==========================================
- Coverage   72.45%   72.42%   -0.03%     
==========================================
  Files          93       92       -1     
  Lines       12472    12462      -10     
==========================================
- Hits         9036     9026      -10     
  Misses       2910     2910              
  Partials      526      526              

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