Update scalajs-junit-test-plugin to 1.4.0 (#481)

Author: scala-steward

.circleci/config.yml

@@ -135,8 +135,8 @@ workflows:
       - scalajs_job:
           name: sjs1.0_2.12
           scala_version: 2.12.12
-          scalajs_version: 1.3.1
+          scalajs_version: 1.4.0
       - scalajs_job:
           name: sjs1.0_2.13
           scala_version: 2.13.4
-          scalajs_version: 1.3.1
+          scalajs_version: 1.4.0

.travis.yml

@@ -12,7 +12,7 @@ scala:
 
 env:
   - SCALAJS_VERSION=         ADOPTOPENJDK=8
-  - SCALAJS_VERSION=1.3.1    ADOPTOPENJDK=8
+  - SCALAJS_VERSION=1.4.0    ADOPTOPENJDK=8
   - SCALAJS_VERSION=         ADOPTOPENJDK=11
   - SCALAJS_VERSION=         ADOPTOPENJDK=15
 

project/plugins.sbt

@@ -1,5 +1,5 @@
 val scalaJSVersion =
-  Option(System.getenv("SCALAJS_VERSION")).filter(_.nonEmpty).getOrElse("1.3.1")
+  Option(System.getenv("SCALAJS_VERSION")).filter(_.nonEmpty).getOrElse("1.4.0")
 
 addSbtPlugin("org.scala-lang.modules" % "sbt-scala-module" % "2.2.3")
 addSbtPlugin("org.portable-scala" % "sbt-scalajs-crossproject" % "1.0.0")