api: adding missing rollup dependency
"@urbit/eslint-config": "^1.0.3",
"babel-eslint": "^10.1.0",
"eslint-plugin-react": "^7.24.0",
+ "rollup": "^2.59.0",
"rollup-plugin-analyzer": "^4.0.0",
"rollup-plugin-terser": "^7.0.2",
"rollup-plugin-typescript2": "^0.30.0",
