message: fix(dependencies): move `np` to devDependency
  Package `np` is not used in the source code. Having `np` in `dependencies` means all projects that list `react-hotkeys-hook` in their dependencies will have their package manager install `np` and all it's crazy sprawling sub-dependencies.
diff: ]
  },
  "dependencies": {
  - "hotkeys-js": "3.8.1",
  - "np": "6.3.2"
  + "hotkeys-js": "3.8.1"
  },
  "devDependencies": {
  "@babel/core": "7.10.5",
  "emotion-theming": "10.0.27",
  "gatsby-plugin-emotion": "4.3.10",
  "jest": "26.1.0",
  + "np": "6.3.2",
  "react": "16.13.1",
  "react-dom": "16.13.1",
  "react-test-renderer": "16.13.1",
  