cleanup: use tokio test shorthand

[dbolduc]

reclaim vertical space

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.02%. Comparing base (7bb7973) to head (3575c36).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4800      +/-   ##
==========================================
+ Coverage   94.98%   95.02%   +0.03%     
==========================================
  Files         204      204              
  Lines        7877     7877              
==========================================
+ Hits         7482     7485       +3     
+ Misses        395      392       -3     

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