Merge pull request scala#10836 from scala-steward/update/2.12.x/sbt-mima-plugin-1.1.4

Update sbt-mima-plugin to 1.1.4 in 2.12.x

Author: SethTisue

project/plugins.sbt

@@ -25,7 +25,7 @@ buildInfoKeys := Seq[BuildInfoKey](buildClasspath)
 
 buildInfoPackage := "scalabuild"
 
-addSbtPlugin("com.typesafe" % "sbt-mima-plugin" % "1.1.3")
+addSbtPlugin("com.typesafe" % "sbt-mima-plugin" % "1.1.4")
 
 libraryDependencies ++= Seq(
   "org.eclipse.jgit" % "org.eclipse.jgit" % "4.11.9.201909030838-r",