Update deps (#450)

Author: scala-steward

project/plugins.sbt

@@ -4,5 +4,5 @@ addSbtPlugin("com.eed3si9n" % "sbt-projectmatrix" % "0.10.1")
 addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "2.3.1")
 addSbtPlugin("org.scalameta" % "sbt-scalafmt" % "2.5.4")
 addSbtPlugin("ch.epfl.scala" % "sbt-scalafix" % "0.14.2")
-addSbtPlugin("com.github.sbt" % "sbt-ci-release" % "1.9.2")
+addSbtPlugin("com.github.sbt" % "sbt-ci-release" % "1.9.3")
 addSbtPlugin("com.thoughtworks.sbt-api-mappings" % "sbt-api-mappings" % "3.0.2")