geolocation test flakes

[nikw9944]

From https://github.com/malbeclabs/doublezero/actions/runs/26306464685/job/77444691729:

2026-05-22T19:05:46.9049270Z === NAME  TestPublisher_RemoveProbe/removes_existing_probe
2026-05-22T19:05:46.9050177Z         	Error Trace:	/workspace/controlplane/telemetry/internal/geoprobe/publisher_test.go:471
2026-05-22T19:05:46.9050855Z         	Error:      	Received unexpected error:
2026-05-22T19:05:46.9052436Z         	            	failed to create UDP connection for probe 127.0.0.1: failed to create UDP connection: listen udp4 0.0.0.0:0: bind: invalid argument
2026-05-22T19:05:46.9053241Z         	Test:       	TestPublisher_RemoveProbe/removes_existing_probe