Update sbt-mima-plugin to 1.1.3

Author: scala-steward

project/plugins.sbt

@@ -9,4 +9,4 @@ addSbtPlugin("com.softwaremill.sbt-softwaremill" % "sbt-softwaremill-publish" %
 addSbtPlugin("com.softwaremill.sbt-softwaremill" % "sbt-softwaremill-browser-test-js" % sbtSoftwareMillVersion)
 
 addSbtPlugin("org.jetbrains" % "sbt-ide-settings" % "1.1.0")
-addSbtPlugin("com.typesafe" % "sbt-mima-plugin" % "1.1.2")
+addSbtPlugin("com.typesafe" % "sbt-mima-plugin" % "1.1.3")