Updated: centrifuge-gsrpc-v2 milestone 2 evaluation

[niklabh]

Milestone Delivery Checklist

• The milestone-delivery-template.md has been copied and updated.
• The invoice form 📝 has been filled out for this milestone.
• This pull request is being made by the same account as the accepted application.
• I have disclosed any and all sources of reused code in the submitted repositories and have done my due diligence to meet its license requirements.
• In case of acceptance, the payment will be transferred to the BTC/ETH/fiat account provided in the application.
• The delivery is according to the Guidelines for Milestone Deliverables.

Link to the application pull request: #890

[semuelle]

Thanks, @niklabh!