Upgrade devnet

CONTRIBUTING.md

@@ -7,6 +7,8 @@ Thanks for wanting to contribute! :yellow_heart:
 To work in this repo, you'll need to install:
 1. [Rust Toolchain](https://rustup.rs/)
 1. [Docker](https://docs.docker.com/get-docker/)
+1. [ripgrep](https://github.com/BurntSushi/ripgrep)
+1. [mprocs](https://github.com/pvolok/mprocs)
 
 And clone the [Optimism Monorepo](https://github.com/ethereum-optimism/optimism)
 
@@ -19,13 +21,9 @@ git clone [email protected]:clabby/op-challenger.git
 2. Configure your dev environment
 ```sh
 # Set the MONOREPO_DIR variable
-nvim .env.devnet
-# Set up your env vars
-source .env.devnet
+nvim start_devnet.sh
 # On the L1 service, port forward the websocket endpoint port (8546)
 nvim $MONOREPO_DIR/ops-bedrock/docker-compose.yml
-# Install forge deps
-(cd ./testdata/mock-dgf && forge install)
 # Start the devnet and deploy the mock dispute game factory
 ./start_devnet.sh
 ```