add alchemy provider

frontend/src/pages/index.tsx

@@ -8,7 +8,10 @@ import {
 import { CreateClientConfig, configureChains, createClient, WagmiConfig } from "wagmi";
 import { Chain, sepolia, foundry, polygon, polygonMumbai } from "wagmi/chains";
 import { alchemyProvider } from "wagmi/providers/alchemy";
+import { infuraProvider } from "wagmi/providers/infura";
 import { publicProvider } from "wagmi/providers/public";
+import { jsonRpcProvider } from "@wagmi/core/providers/jsonRpc";
+
 import {
   injectedWallet,
   rainbowWallet,
@@ -23,8 +26,9 @@ import {
 import App from "../components/App";
 
 const { chains, provider } = configureChains([sepolia, polygonMumbai] as Chain[], [
-  alchemyProvider({ apiKey: "7HyG965YlOEgB6-wsB0OLy6m-E1hrjRY" }),
-  publicProvider(),
+  infuraProvider({ apiKey: process.env.NEXT_PUBLIC_INFURA_API_KEY! }),
+  //alchemyProvider({ apiKey: process.env.NEXT_PUBLIC_ALCHEMY_ID! }),
+  //publicProvider(),
 ]);
 
 /*const { connectors } = getDefaultWallets({