Bump @vercel/ncc from 0.28.3 to 0.28.4 (#67)

Author: dependabot[bot]

package-lock.json

@@ -42,7 +42,7 @@
     "@types/lodash": "^4.14.168",
     "@types/node": "^12.20.11",
     "@typescript-eslint/parser": "^4.22.0",
-    "@vercel/ncc": "^0.28.3",
+    "@vercel/ncc": "^0.28.4",
     "eslint": "^7.25.0",
     "eslint-plugin-github": "^4.1.3",
     "eslint-plugin-jest": "^24.3.6",