fix: set private

Author: grothem

packages/contract-types/package.json

@@ -3,6 +3,7 @@
   "version": "1.0.0",
   "main": "index.js",
   "license": "MIT",
+  "private": true,
   "scripts": {
     "generate": "typechain --target=ethers-v5 ./src/abis/**/*.json --out-dir ./src/types"
   },