build(deps-dev): bump prettier from 2.0.5 to 2.1.0 in /web

Bumps [prettier](https://github.com/prettier/prettier) from 2.0.5 to 2.1.0.
- [Release notes](https://github.com/prettier/prettier/releases)
- [Changelog](https://github.com/prettier/prettier/blob/master/CHANGELOG.md)
- [Commits](https://github.com/prettier/prettier/compare/2.0.5...2.1.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

web/package.json

@@ -63,6 +63,6 @@
     "eslint-plugin-prettier": "^3.1.4",
     "husky": "^4.2.5",
     "lint-staged": "^10.2.11",
-    "prettier": "^2.0.5"
+    "prettier": "^2.1.0"
   }
 }