chore: Bump @zeit/ncc from 0.21.0 to 0.21.1 (#30)

Bumps [@zeit/ncc](https://github.com/zeit/ncc) from 0.21.0 to 0.21.1.
- [Release notes](https://github.com/zeit/ncc/releases)
- [Commits](vercel/ncc@0.21.0...0.21.1)

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

package.json

@@ -29,7 +29,7 @@
     "aws-sdk": "^2.633.0"
   },
   "devDependencies": {
-    "@zeit/ncc": "^0.21.0",
+    "@zeit/ncc": "^0.21.1",
     "eslint": "^6.8.0",
     "jest": "^25.1.0"
   }