Hotfix release:
- fixing bug that caused premature change in the committee size.
As a result of human error, runtime uploaded during that Testnet release was the one used in local tests. As a result of this, Testnet blocks from 5,268,502 till 5,434,491 contain faulty runtime (aleph_runtime.compact.wasm), whereas blocks 5,434,492 onwards contain correct runtime (correct-aleph_runtime.compact.wasm).