Epoch 3.0 Testnet Config

[saralab]

Placeholder to track Testnet 3.0 config: https://github.com/stacks-network/stacks-core/discussions/5006#discussion-6974703

[kantai]

Candidate block: 56,457.

This would be approximately 11am Eastern time, October 10.

This is around 150 blocks before the next prepare phase.

[kantai]

Configuration set in 1a08c1368

[blockstack-devops]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.