build: Update sbt-ci-release from 1.5.11 to 1.5.12

Author: j5ik2o-bot[bot]

project/plugins.sbt

@@ -1,6 +1,6 @@
 addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.5.0")
 
-addSbtPlugin("com.github.sbt" % "sbt-ci-release" % "1.5.11")
+addSbtPlugin("com.github.sbt" % "sbt-ci-release" % "1.5.12")
 
 addSbtPlugin("pl.project13.scala" % "sbt-jmh" % "0.4.4")