* ci: disable yarn install cache

* chore: use yarn test:ci to only test changes since master

* ci: use separate job for linting contracts

* feat(contracts): update to https://github.com/ethereum-optimism/contracts/commit/06cdfb45223d239b828ca88623717de958c96a69

* feat(hardhat-ovm): replace env var with OVM config network

https://github.com/ethereum-optimism/plugins/pull/35

* feat(batch-submitter): update to https://github.com/ethereum-optimism/batch-submitter/commit/8cd92d49272223ca2aa3d7cd39cb315a2dd1459f

* feat(dtl): update to https://github.com/ethereum-optimism/data-transport-layer/commit/b1e340a32bd6986ba2c381a10229d49c0b274648

More unit tests and slight type refactoring

* chore: regenerate yarn lock

* fix(integration-tests): use `--network optimism` instead of env var

* chore: yarn lint