chore(deps): Bump github.com/nats-io/nats-streaming-server from 0.24.6 to 0.25.6 in /protocol/stan/v2 in the go_modules group across 1 directory

chore(deps): Bump github.com/nats-io/nats-streaming-server from 0.24.6 to 0.25.6 in /protocol/stan/v2 in the go_modules group across 1 directory #1637