Merge pull request #196 from scala-steward/update/specs2-core-4.23.0

Update specs2-core to 4.23.0

Author: mkurz

project/Dependencies.scala

@@ -4,7 +4,7 @@ object Library {
 
   // Versions
   val bndVersion = "6.4.1"
-  val specs2Version = "4.22.0"
+  val specs2Version = "4.23.0"
 
   // Libraries
   val bndLib = "biz.aQute.bnd" % "biz.aQute.bndlib" % bndVersion