Update JSDOM, improve CI infrastructure

Author: armanbilge

.github/dependabot.yml

@@ -0,0 +1,6 @@
+version: 2
+updates:
+  - package-ecosystem: "npm"
+    directory: "/"
+    schedule:
+      interval: "weekly"

.github/workflows/ci.yml

@@ -55,15 +55,12 @@ jobs:
             ~/Library/Caches/Coursier/v1
           key: ${{ runner.os }}-sbt-cache-v2-${{ hashFiles('**/*.sbt') }}-${{ hashFiles('project/build.properties') }}
 
-      - name: Setup NodeJS v14 LTS
+      - name: Setup NodeJS v16 LTS
         if: matrix.ci == 'ciNode' || matrix.ci == 'ciJSDOMNodeJS'
-        uses: actions/setup-node@v2.1.2
+        uses: actions/setup-node@v3
         with:
-          node-version: 14
-
-      - name: Install jsdom
-        if: matrix.ci == 'ciJSDOMNodeJS'
-        run: npm install
+          node-version: 16
+          cache: npm
 
       - name: Check that workflows are up to date
         run: sbt ++${{ matrix.scala }} githubWorkflowCheck

build.sbt

@@ -49,14 +49,11 @@ ThisBuild / crossScalaVersions := Seq("2.11.12", "2.12.15", "2.13.7", "3.0.2")
 
 ThisBuild / githubWorkflowBuildPreamble ++= Seq(
   WorkflowStep.Use(
-    UseRef.Public("actions", "setup-node", "v2.1.2"),
-    name = Some("Setup NodeJS v14 LTS"),
-    params = Map("node-version" -> "14"),
+    UseRef.Public("actions", "setup-node", "v3"),
+    name = Some("Setup NodeJS v16 LTS"),
+    params = Map("node-version" -> "16", "cache" -> "npm"),
     cond = Some("matrix.ci == 'ciNode' || matrix.ci == 'ciJSDOMNodeJS'")),
-  WorkflowStep.Run(
-    List("npm install"),
-    name = Some("Install jsdom"),
-    cond = Some("matrix.ci == 'ciJSDOMNodeJS'")))
+)
 
 val ciVariants = List("ciNode", "ciFirefox", "ciChrome", "ciJSDOMNodeJS")