[CDEC-610] Fix tests for protocol-only update
[CDEC-610] Fix tests for protocol-only update

Since protocol-only updates are now allowed, these tests should
return `Right ()`.

input-output-hk/pos-haskell-prototype,input-output-hk/cardano-sl,input-output-hk/cardano-sl,input-output-hk/cardano-sl,input-output-hk/pos-haskell-prototype,input-output-hk/cardano-sl,input-output-hk/pos-haskell-prototype