[CSL-1579] Switch to serokell-util-0.4.1
[CSL-1579] Switch to serokell-util-0.4.1

It makes exception printing slightly prettier in some cases.

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