message: chore(lint): update .lintstagedrc
  ### Description
  Newer version of `lint-staged` doesn't require `git add` in `.lintstagedrc`, and thus they are removed.
  ### Changelog
  **Removed**
  `git add` in `.lintstagedrc`
diff: "**/*.{js,ts,tsx}": [
  "prettier --write",
  "yarn lint:license:staged",
  - "yarn lint:scripts:staged",
  - "git add"
  + "yarn lint:scripts:staged"
  ],
  "**/*.scss": [
  "prettier --write",
  "yarn lint:license:staged",
  - "stylelint '**/*.scss' --config ./packages/stylelint-config-ibmdotcom",
  - "git add"
  + "stylelint '**/*.scss' --config ./packages/stylelint-config-ibmdotcom"
  ],
  "*.md": [
  - "prettier --write",
  - "git add"
  + "prettier --write"
  ]
  }
  