Upgrade #10 Release Tracker

[tynes]

This ticket is meant to operate as a changelog for tracking modifications to smart contracts so that it is easier to create releases. There should be a section for each contract and a table that includes the PR that modifies the contract, the version the contract is updated to as well as a small description of the change.

Contract Versions

These are the versions of contracts that will be included as part of the release.

Name	Version
SystemConfig	2.3.0
OptimismPortal	2.8.1
L1ERC721Bridge	2.1.1

SystemConfig

PR	Version	Description
#10226	2.3.0-beta.1	Clean Ecotone API

OptimismPortal

PR	Version	Description
#10585	2.8.1-beta.1	Overridable version()

L1ERC721Bridge

PR	Version	Description
#10755	2.1.1-beta.1	Minor type fix

[mds1]

I've updated the title to Upgrade #10 Release Tracker, per the new smart contract versioning rules, since Upgrade #9 (Fjord) is the most recent one