Give an overview of what's changed in this release.
Insert a list of L1 contracts that've changed an are being updated as part of this release.
Insert links to the contracts updated semantic version e.g. source code
Insert a list of L1 contracts that are new and short descriptions for them.
Insert links to the contracts semantic version e.g. source code
https://github.com/ethereum-optimism/optimism/compare/op-contracts/vX.Y.Z-rc.1...op-contracts/vX.Y.Z