fix: add all_profiles param + narrow exception handling

- add all_profiles=False to find_gateway_pids() and
  kill_gateway_processes() so hermes update and gateway stop --all
  can still discover processes across all profiles
- narrow bare 'except Exception' to (OSError, subprocess.TimeoutExpired)
- update test mocks to match new signatures

hermes_cli/main.py

@@ -3876,7 +3876,7 @@ def cmd_update(args):
             # Exclude PIDs that belong to just-restarted services so we don't
             # immediately kill the process that systemd/launchd just spawned.
             service_pids = _get_service_pids()
-            manual_pids = find_gateway_pids(exclude_pids=service_pids)
+            manual_pids = find_gateway_pids(exclude_pids=service_pids, all_profiles=True)
             for pid in manual_pids:
                 try:
                     os.kill(pid, _signal.SIGTERM)