contracts-bedrock: deploy superchain config

Both the proxy and the latest implementation.
Deploy them to sepolia. The proxy was deployed with
the following command:

```bash
forge script scripts/Deploy.s.sol:Deploy \
  --sig 'deployERC1967Proxy(string)' --rpc-url $ETH_RPC_URL \
  --private-key $PRIVATE_KEY \
  --broadcast \
  --verify \
  SuperchainConfigProxy

```