Flaky test - TestAttestAgent/rate_limit_fails

[rturner3]

--- FAIL: TestAttestAgent (0.33s)
    --- FAIL: TestAttestAgent/rate_limit_fails (0.01s)
        service_test.go:3436: 
            	Error Trace:	/home/runner/work/spire/spire/pkg/server/api/agent/v1/service_test.go:3436
            	            				/home/runner/work/spire/spire/pkg/server/api/agent/v1/service_test.go:3175
            	Error:      	Received unexpected error:
            	            	EOF
            	Test:       	TestAttestAgent/rate_limit_fails
        server.go:123: Gracefully stopping gRPC server
        server.go:125: Server stopped
        server.go:127: Server serve returned <nil>
        server.go:119: Waiting for handlers to drain
        server.go:121: Handlers drained
FAIL
FAIL	github.com/spiffe/spire/pkg/server/api/agent/v1	0.919s

https://github.com/spiffe/spire/actions/runs/12777880767/job/35619626996?pr=5762