Merge pull request #586 from scala-steward/update/sbt-pgp-2.1.0

Update sbt-pgp to 2.1.0

Author: dwijnand

project/plugins.sbt

@@ -12,6 +12,6 @@ def isStaging = sys.props.contains("mimabuild.staging")
 resolvers ++= (if (isStaging) List(stagingResolver) else Nil)
 
 addSbtPlugin("com.dwijnand"      % "sbt-dynver"      % "4.1.1")
-addSbtPlugin("com.jsuereth"      % "sbt-pgp"         % "2.0.2")
+addSbtPlugin("com.jsuereth"      % "sbt-pgp"         % "2.1.0")
 addSbtPlugin("com.typesafe"      % "sbt-mima-plugin" % "0.8.1")
 addSbtPlugin("com.dwijnand"      % "sbt-travisci"    % "1.2.0")