The artifacts for v1.8.0 were generated from the tag `op-contracts-v180-artifacts-base`, which points to `proposal/contracts/v1.8.0` with the non-proxied OPCM backported.

The OPCM was deployed using the `opcm bootstrap` command. The PDG blueprints were updated using a custom script which you can find at the `op-contracts-v180-blueprints-script` [tag](https://github.com/ethereum-optimism/optimism/commit/a7091185a787ea104343abafc311d65a5916e4b8).

As part of this PR, I also added a bunch of tests to assert that the semver versions of deployed contracts are correct. I'll add similar tests for mainnet once the gov vote passes.