Payment in native gas tokens and approved non-LINK tokens is now available for upkeeps on Automation v2.3 or later. Currently this capability is available on the Base Sepolia testnet.
When you register a new upkeep, you can select whether you want to pay in LINK, the native gas token, or an approved non-LINK token for the chain that you are using. After you register the upkeep, the payment setting cannot be updated.
See the Supported Networks page to find the contract and config information for Automation on Base Sepolia testnet.