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 (bsc#1259816): - CVE-2026-33186: google.golang.org/grpc: authorization bypass due to improper validation of the HTTP/2: path pseudo- header (bsc#1260265). Changes for google-cloud-sap-agent: * Collect WLM metric `saphanasr_angi_installed` for all OS types. * Failure handling: Remove attached disks from CG * OTE Status checks for Parameter Manager (SAP Agent) * Log command-line arguments in configureinstance. * Minor multiple reliability checks and fixes * Support custom names for restored disks in hanadiskrestore * Add newAttachedDisks to Restorer and detach them on restore failure. * Improve unit test coverage for hanadiskbackup and hanadiskrestore * Add support for refresh point tests. * Refactor HANA disk backup user validation and physical path parsing. * Auto updated compiled protocol buffers * Parameter Manager integration to SAP Agent * Modify collection logic for SAP HANA configuration files. * Update workloadagentplatform version and hash. * Update WLM Validation metrics to support SAPHanaSR-angi setups. * Increment agent version to 3.12. * SAP HANA Pacemaker failover settings can come from `SAPHanaController`. * Update collection for WLM metric `ha_sr_hook_configured`. * Refactor CheckTopology to accept instance number. * Use constant backoff with max retries for snapshot group operations. * Update workloadagentplatform dependency