build: upgrades build pipeline from CircleCI 1.0 -> 2.0 (#11162)

build: upgrades build pipeline from CircleCI 1.0 -> 2.0

scripts/webpack/webpack.test.js

@@ -16,7 +16,7 @@ config = merge(common, {
     new webpack.SourceMapDevToolPlugin({
       filename: null, // if no value is provided the sourcemap is inlined
       test: /\.(ts|js)($|\?)/i // process .js and .ts files only
-    })
+    }),
   ]
 });