Update weaver-cats, weaver-scalacheck to 0.8.4 (#416)

Author: the-pavels

project/Dependencies.scala

@@ -14,7 +14,7 @@ object Dependencies {
 
     val newtype    = "0.4.4"
     val pulsar     = "3.1.1"
-    val weaver     = "0.8.3"
+    val weaver     = "0.8.4"
 
     val betterMonadicFor = "0.3.1"
     val contextApplied   = "0.1.4"