Update sbt to 1.3.7

[scala-steward]

Updates org.scala-sbt:sbt from 1.3.6 to 1.3.7.
Release Notes/Changelog

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.

Have a fantastic day writing Scala!

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, semver-patch

[codecov-io]

Codecov Report

Merging #138 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #138   +/-   ##
=======================================
  Coverage   99.31%   99.31%           
=======================================
  Files          15       15           
  Lines         733      733           
  Branches       30       30           
=======================================
  Hits          728      728           
  Misses          5        5

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update d1921b7...1018c80. Read the comment docs.