Update scalatest to 3.2.15

[RustedBones]

No description provided.

[codecov]

Codecov Report

Merging #4672 (fcb6eed) into main (931d78c) will increase coverage by 0.00%.
The diff coverage is n/a.

❗ Current head fcb6eed differs from pull request most recent head e1e5ec4. Consider uploading reports for the commit e1e5ec4 to get more accurate results

@@           Coverage Diff           @@
##             main    #4672   +/-   ##
=======================================
  Coverage   60.64%   60.65%           
=======================================
  Files         286      286           
  Lines       10453    10453           
  Branches      694      694           
=======================================
+ Hits         6339     6340    +1     
+ Misses       4114     4113    -1     

Impacted Files	Coverage Δ
...src/main/scala/com/spotify/scio/coders/Coder.scala	85.84% <0.00%> (+0.44%)	⬆️

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