Add artifact migration for sbt-git

[mkurz]

See sbt/sbt-git#205

[codecov]

Codecov Report

Merging #2545 (4848086) into main (692bd55) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #2545   +/-   ##
=======================================
  Coverage   81.10%   81.10%           
=======================================
  Files         144      144           
  Lines        2535     2535           
  Branches       41       41           
=======================================
  Hits         2056     2056           
  Misses        479      479           

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