chore: specify paris hardfork explicitly

Although hardhat uses paris by default for solc >=0.8.20, this
might not be the case in future versions of hardhat. It's better
to specify the hardfork explicitly, and update it when the chains
are ready.

Author: kkirka

hardhat.config.ts

@@ -62,6 +62,7 @@ const config: HardhatUserConfig = {
               yul: !process.env.CI,
             },
           },
+          evmVersion: "paris",
           outputSelection: {
             "*": {
               "*": ["storageLayout"],