Update sbt-ci-release to 1.5.3 (#283)

Author: scala-steward

project/plugins.sbt

@@ -1,5 +1,5 @@
 resolvers += Resolver.sonatypeRepo("releases")
-addSbtPlugin("com.geirsson"       % "sbt-ci-release"           % "1.5.2")
+addSbtPlugin("com.geirsson"       % "sbt-ci-release"           % "1.5.3")
 addSbtPlugin("com.47deg"          % "sbt-org-policies"         % "0.13.3")
 addSbtPlugin("com.47deg"          % "sbt-microsites"           % "1.1.5")
 addSbtPlugin("org.portable-scala" % "sbt-scalajs-crossproject" % "1.0.0")