Update sbt to 1.5.8

[scala-steward]

Updates org.scala-sbt:sbt from 1.5.7 to 1.5.8.
GitHub Release Notes - Version Diff

I'll automatically update this PR to resolve conflicts as long as you don't change it yourself.

If you'd like to skip this version, you can just close this PR. If you have any feedback, just mention me in the comments below.

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Ignore future updates

Add this to your .scala-steward.conf file to ignore future updates of this dependency:

updates.ignore = [ { groupId = "org.scala-sbt", artifactId = "sbt" } ]

labels: library-update, early-semver-patch, semver-spec-patch, commit-count:1

[codecov]

Codecov Report

Merging #345 (fd57978) into master (6d66fc7) will decrease coverage by 0%.
The diff coverage is n/a.

@@          Coverage Diff          @@
##           master   #345   +/-   ##
=====================================
- Coverage      84%    84%   -1%     
=====================================
  Files          14     14           
  Lines         651    651           
  Branches        3      3           
=====================================
- Hits          549    548    -1     
- Misses        102    103    +1     

Impacted Files	Coverage Δ
...e/src/main/scala/io/github/vigoo/prox/errors.scala	0% <0%> (-13%)	⬇️

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