Update sbt-ci-release to 1.11.1 (#357)

Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

Author: scala-steward

project/plugins.sbt

@@ -4,4 +4,4 @@ addSbtPlugin("org.portable-scala" % "sbt-scalajs-crossproject" % "1.3.2")
 addSbtPlugin("org.portable-scala" % "sbt-scala-native-crossproject" % "1.3.2")
 addSbtPlugin("org.scala-native" % "sbt-scala-native" % "0.5.7")
 addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.5.4")
-addSbtPlugin("com.github.sbt" % "sbt-ci-release" % "1.11.0")
+addSbtPlugin("com.github.sbt" % "sbt-ci-release" % "1.11.1")