Merge pull request #134 from scala-steward/update/sbt-sonatype-3.8.1

Update sbt-sonatype to 3.8.1

Author: cquiroz

project/plugins.sbt

@@ -1,7 +1,7 @@
 
 addSbtPlugin("com.47deg"  % "sbt-microsites" % "1.0.2")
 
-addSbtPlugin("org.xerial.sbt" % "sbt-sonatype" % "3.7")
+addSbtPlugin("org.xerial.sbt" % "sbt-sonatype" % "3.8.1")
 
 addSbtPlugin("com.jsuereth" % "sbt-pgp" % "2.0.1")