deps: bump @zeit/ncc from 0.21.0 to 0.21.1 (#101)

Author: dependabot-preview[bot]

package-lock.json

@@ -60,7 +60,7 @@
     "@types/node": "~12",
     "@typescript-eslint/eslint-plugin": "^2.20.0",
     "@typescript-eslint/parser": "^2.20.0",
-    "@zeit/ncc": "^0.21.0",
+    "@zeit/ncc": "^0.21.1",
     "eslint": "^6.8.0",
     "eslint-plugin-jest": "^23.7.0",
     "husky": "^4.2.3",