deps: bump @zeit/ncc from 0.21.0 to 0.21.1

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

@@ -58,7 +58,7 @@
     "@types/node": "~12",
     "@types/node-fetch": "^2.5.4",
     "@typescript-eslint/parser": "^2.20.0",
-    "@zeit/ncc": "^0.21.0",
+    "@zeit/ncc": "^0.21.1",
     "eslint": "^6.8.0",
     "husky": "^4.2.3",
     "jest": "^25.1.0",