Concordium Node 6.1.6 for Testnet

Concordium node version 6.1.6 is released for testnet.

A number of improvements and fixes were made. Please refer to the release notes for details. Also, note that this is the last node version that will support gRPC v1.

Updating to the newest node version is highly recommended.

The node release for mainnet is now planned for Tuesday, October 17.