gitian: Add missing automake package to gitian-win-signer.yml
gitian: Add missing automake package to gitian-win-signer.yml

automake is needed to build osslsigncode otherwise autogen.sh fails.

Github-Pull: #18598
Rebased-From: e44aeefaaed8d698d1b9004b66f85384397b1a75

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