[skip ci] fix(tests): serve and serve-ts overlapping

Author: nklayman

__tests__/serveTS.spec.js

@@ -1,6 +1,10 @@
 jest.setTimeout(100000)
 
+const sleep = t => new Promise(resolve => setTimeout(resolve, t))
+
 const runTests = require('./serve.helper.js').runTests
 test('electron:serve-ts', async () => {
+  // Prevent serve/serve-ts tests from overlapping
+  await sleep(2000)
   await runTests(true)
 })