Ethereum Gateway support for Görli + Sepolia Testnets and the Ethereum Merge

What this post added

This post announces the Cloudflare Ethereum Gateway's support for the Ethereum Merge and the Görli and Sepolia testnets. It details the gateway's architecture, which uses Cloudflare Workers and Load Balancers to interact with Ethereum nodes. The post also explains the differences between Proof of Work, Proof of Stake, and Proof of Authority consensus mechanisms, highlighting the environmental benefits of Proof of Stake and Cloudflare's role in supporting the Ethereum Merge by running an authority node for the Görli testnet. It provides instructions on how to use the testnet gateways and announces the deprecation of Rinkeby testnet support.