Merge pull request #223 from scalacenter/update/sbt-ci-release-1.9.0

Update sbt-ci-release to 1.9.0

Author: adpi2

sbt-plugin/project/plugins.sbt

@@ -1,4 +1,4 @@
-addSbtPlugin("com.github.sbt" % "sbt-ci-release" % "1.8.0")
+addSbtPlugin("com.github.sbt" % "sbt-ci-release" % "1.9.0")
 addSbtPlugin("org.scala-sbt" % "sbt-contraband" % "0.6.0")
 addSbtPlugin("ch.epfl.scala" % "sbt-scalafix" % "0.13.0")
 addSbtPlugin("com.eed3si9n" % "sbt-buildinfo" % "0.12.0")