release the Scala 2.12.17 kraken

Author: SethTisue

modules/core/src/main/resources/default.scala-steward.conf

@@ -34,10 +34,10 @@ updates.ignore = [
   { groupId = "org.scala-lang", artifactId = "scalap",         version = { exact = "2.13.9" } },
 
   // Ignore the next Scala 2.12 version until it is announced.
-  { groupId = "org.scala-lang", artifactId = "scala-compiler", version = { exact = "2.12.17" } },
-  { groupId = "org.scala-lang", artifactId = "scala-library",  version = { exact = "2.12.17" } },
-  { groupId = "org.scala-lang", artifactId = "scala-reflect",  version = { exact = "2.12.17" } },
-  { groupId = "org.scala-lang", artifactId = "scalap",         version = { exact = "2.12.17" } },
+  { groupId = "org.scala-lang", artifactId = "scala-compiler", version = { exact = "2.12.18" } },
+  { groupId = "org.scala-lang", artifactId = "scala-library",  version = { exact = "2.12.18" } },
+  { groupId = "org.scala-lang", artifactId = "scala-reflect",  version = { exact = "2.12.18" } },
+  { groupId = "org.scala-lang", artifactId = "scalap",         version = { exact = "2.12.18" } },
 
   // Ignore the next Scala.js patch version until it is announced.
   { groupId = "org.scala-js", artifactId = "sbt-scalajs",                     version = { exact = "1.11.1" } },