Enable npm caching

Author: armanbilge

.github/workflows/ci.yml

@@ -60,6 +60,7 @@ jobs:
         uses: actions/setup-node@v3
         with:
           node-version: 16
+          cache: npm
 
       - name: Install jsdom
         if: matrix.ci == 'ciJSDOMNodeJS'

build.sbt

@@ -51,7 +51,7 @@ ThisBuild / githubWorkflowBuildPreamble ++= Seq(
   WorkflowStep.Use(
     UseRef.Public("actions", "setup-node", "v3"),
     name = Some("Setup NodeJS v16 LTS"),
-    params = Map("node-version" -> "16"),
+    params = Map("node-version" -> "16", "cache" -> "npm"),
     cond = Some("matrix.ci == 'ciNode' || matrix.ci == 'ciJSDOMNodeJS'")),
   WorkflowStep.Run(
     List("npm install"),