contracts-bedrock: L2OutputOracle deployment

Deploys the latest implementation of the `L2OutputOracle` to sepolia
and commits the artifact.

The following script was used for the deployment.

```bash

export IMPL_SALT="op/acc"

forge script scripts/Deploy.s.sol:Deploy \
  --sig 'deployL2OutputOracle()' --rpc-url $ETH_RPC_URL \
  --private-key $PRIVATE_KEY \
  --broadcast \
  --verify
```

https://sepolia.etherscan.io/address/0x83aeb8b156cd90e64c702781c84a681dadb1dde2