Update slf4j-api to 1.7.28 (lightbend-labs#179)

scala-steward · analytically · commit 211c52c5d739 · 2019-09-24T08:19:47.000-07:00
diff --git a/project/Dependencies.scala b/project/Dependencies.scala
@@ -6,7 +6,7 @@ object Version {
   val scala     = "2.12.8"
   val crossScala = List(scala, "2.11.12", "2.13.0")
   val scalaTest = "3.0.8"
-  val slf4j     = "1.7.26"
+  val slf4j     = "1.7.28"
 }
 
 object Library {
