Update sbt-ci-release to 1.7.0 (#408)

Author: scala-steward

project/plugins.sbt

@@ -2,7 +2,7 @@ addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.17.0")
 
 addSbtPlugin("ch.epfl.scala" % "sbt-scalajs-bundler" % "0.21.1")
 
-addSbtPlugin("com.github.sbt" % "sbt-ci-release" % "1.6.1")
+addSbtPlugin("com.github.sbt" % "sbt-ci-release" % "1.7.0")
 
 // sane scalac options
 addSbtPlugin("io.github.davidgregory084" % "sbt-tpolecat" % "0.3.1")