Update sbt-ci-release to 1.8.0

Author: scala-steward

project/plugins.sbt

@@ -4,4 +4,4 @@ addSbtPlugin("org.scoverage" % "sbt-coveralls" % "1.3.14")
 addSbtPlugin("pl.project13.scala" % "sbt-jmh" % "0.4.7")
 addSbtPlugin("com.github.sbt" % "sbt-github-actions" % "0.24.0")
 addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.5.2")
-addSbtPlugin("com.github.sbt" % "sbt-ci-release" % "1.7.0")
+addSbtPlugin("com.github.sbt" % "sbt-ci-release" % "1.8.0")