Bump sbt-updates version

[regadas]

Hi @fthomas, this latest version of sbt-updates has some fixes around sbt plugins.

[codecov]

Codecov Report

Merging #296 into master will not change coverage.
The diff coverage is 100%.

@@           Coverage Diff           @@
##           master     #296   +/-   ##
=======================================
  Coverage   49.76%   49.76%           
=======================================
  Files          54       54           
  Lines         627      627           
  Branches       31       31           
=======================================
  Hits          312      312           
  Misses        315      315

Impacted Files	Coverage Δ
...main/scala/org/scalasteward/core/sbt/package.scala	55.55% <100%> (ø)	⬆️

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[fthomas]

Thanks, @regadas!