message: Add test failure retry
diff: "prebuild": "npm run lint && npm run test",
  "build": "node ./out/src/icon-manifest/build.js",
  "pretest": "rimraf ./.nyc_output ./coverage && npm run compile",
  - "test": "nyc -c -x '' mocha ./out/test --recursive",
  + "test": "nyc -c -x '' mocha ./out/test --recursive --retries 3",
  "posttest": "nyc report -r lcov",
  "test:vs": "node ./node_modules/vscode/bin/test",
  "vscode:prepublish": "npm run build",
  