Change logging format to %s

[ahopkins]

Closes #2677

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: +0.019 🎉

Comparison is base (53820bc) 88.617% compared to head (ab30a43) 88.637%.

❗ Current head ab30a43 differs from pull request most recent head 9a82246. Consider uploading reports for the commit 9a82246 to get more accurate results

Additional details and impacted files

@@              Coverage Diff              @@
##              main     #2721       +/-   ##
=============================================
+ Coverage   88.617%   88.637%   +0.019%     
=============================================
  Files           87        87               
  Lines         6844      6838        -6     
  Branches      1178      1176        -2     
=============================================
- Hits          6065      6061        -4     
+ Misses         537       535        -2     
  Partials       242       242               

Impacted Files	Coverage Δ
sanic/log.py	100.000% <ø> (ø)

... and 3 files with indirect coverage changes

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