Merge pull request #357 from scala-steward/update/scala-collection-compat-2.11.0

Update scala-collection-compat to 2.11.0

Author: satabin

build.sbt

@@ -40,7 +40,7 @@ lazy val core = crossProject(JSPlatform, JVMPlatform, NativePlatform)
   .settings(
     name := "diffson-core",
     libraryDependencies ++= Seq(
-      "org.scala-lang.modules" %%% "scala-collection-compat" % "2.10.0",
+      "org.scala-lang.modules" %%% "scala-collection-compat" % "2.11.0",
       "org.typelevel" %%% "cats-core" % "2.9.0",
       "org.scalatest" %%% "scalatest" % scalatestVersion % Test,
       "org.scalacheck" %%% "scalacheck" % scalacheckVersion % Test