Merge pull request #241 from scala-steward/update/sbt-header-5.11.0

bump: sbt-header 5.11.0 (was 5.10.0)

Author: eed3si9n

project/plugins.sbt

@@ -1,5 +1,5 @@
 addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.5.4")
-addSbtPlugin("de.heikoseeberger" % "sbt-header" % "5.10.0")
+addSbtPlugin("com.github.sbt" % "sbt-header" % "5.11.0")
 addSbtPlugin("com.github.sbt" % "sbt-ci-release" % "1.11.2")
 
 libraryDependencies += "org.scala-sbt" %% "scripted-plugin" % sbtVersion.value