Update scalamock to 7.5.5

Author: scala-steward

project/Versions.scala

@@ -50,5 +50,5 @@ object V {
   val doobie = "1.0.0-RC2"
 
   // test-only
-  val scalamock = "7.5.2"
+  val scalamock = "7.5.5"
 }