test(signing): vendor the complete AdCP 3.1.8 request-signing vector set and pin it against drift#980

bokelley merged 6 commits into

adcontextprotocol:mainadcontextprotocol/adcp-client-python:mainfrom

KonstantinMirin:fix/vendor-complete-signing-vectorsKonstantinMirin/adcp-client-python:fix/vendor-complete-signing-vectorsCopy head branch name to clipboard