message: Bump `node-gyp` & `prebuildify-cross` devDependencies
diff: "hallmark": "^4.0.0",
  "level-concat-iterator": "^3.0.0",
  "mkfiletree": "^2.0.0",
  - "node-gyp": "^7.1.2",
  + "node-gyp": "^8.4.1",
  "nyc": "^15.0.0",
  "prebuildify": "^5.0.0",
  "prebuildify-ci": "^1.0.4",
  - "prebuildify-cross": "^4.0.1",
  + "prebuildify-cross": "^5.0.0",
  "readfiletree": "^1.0.0",
  "rimraf": "^3.0.0",
  "standard": "^16.0.3",
  