buildBear testnet contracts cannot be verified, instead i also used sepolia testnet rpc url for deployment contract verification using etherscan
- PRIVATE_KEY [make sure to have enough native token for deployment],
- ETHERSCAN_API [for verifying the deployed contract],
- RPC_URL - for this test, i used buildbear polygon mainnet sandbox [https://rpc.buildbear.io/known-luminara-unduli-0a51af9f] for faster testing, you can use any RPC endpoint