Security update for google-cloud-sap-agent

This update for google-cloud-sap-agent fixes the following issue: Update to google-cloud-sap-agent 3.12 bsc1259816: CVE-2026-33186: google.golang.org/grpc: authorization bypass due to improper validation of the HTTP/2: path pseudo- header bsc1260265. Changelog: Collect WLM metric...