Use latest signapple commit
Use latest signapple commit

Update gitian and guix to use the same latest signapple commit

Github-Pull: #22190
Rebased-From: 683d197970a533690ca1bd4d06d021900e87cb8b

DigitalPandacoin/pandacoin,peercoin/peercoin,DigitalPandacoin/pandacoin,peercoin/peercoin,peercoin/peercoin,DigitalPandacoin/pandacoin,peercoin/peercoin,peercoin/peercoin,DigitalPandacoin/pandacoin,DigitalPandacoin/pandacoin,DigitalPandacoin/pandacoin,peercoin/peercoin