Revert "Update sbt to 1.4.1 (#955)"
Revert "Update sbt to 1.4.1 (#955)"

This reverts commit 079acf068439af3bab83e69951e315ac18764c46.

trueaccord/ScalaPB,scalapb/ScalaPB,scalapb/ScalaPB,scalapb/ScalaPB,scalapb/ScalaPB