Add Shunkichi Sato, our Rust developer

[6r1d]

If you want to be able to assign bugs to someone, they only need Read access.

• GitHub ID to add: @s8sato

Project to be added to:

• https://github.com/hyperledger/iroha
• https://github.com/hyperledger/iroha-javascript
• https://github.com/hyperledger/iroha-java
• https://github.com/hyperledger/iroha-python

Teams to be added to:

• https://github.com/orgs/hyperledger/teams/iroha-maintainers
• https://github.com/orgs/hyperledger/teams/iroha-python
• https://github.com/orgs/hyperledger/teams/iroha-java
• https://github.com/orgs/hyperledger/teams/iroha-javascript

Role: Write

Context: Sato-san has returned to our team. The MAINTAINERS.md file will be updated in hyperledger-iroha/iroha#4254

[ryjones]

Done. I will note this is something you were able to do yourself, as s8sato was still a member of the Hyperledger org.