feat(test): use safecast.RequireConvert as a replacement for safecast.Convert in tests

Author: ccoVeille

pkg/controllers/proxy/ipset_fixture_test.go

@@ -149,10 +149,7 @@ func buildIPVSServicesFromFixtures(t *testing.T, services *v1.ServiceList) []*ip
 			require.GreaterOrEqualf(t, port.Port, int32(0), "service %s/%s has negative port %d", svc.Namespace, svc.Name, port.Port)
 			const maxServicePort = 1<<16 - 1
 			require.LessOrEqualf(t, port.Port, int32(maxServicePort), "service %s/%s port %d exceeds %d", svc.Namespace, svc.Name, port.Port, maxServicePort)
-			targetPort, err := safecast.Convert[uint16](port.Port)
-			if err != nil {
-				t.Fatalf("failed to convert port %d to uint16: %v", port.Port, err)
-			}
+			targetPort := safecast.RequireConvert[uint16](t, port.Port)
 
 			appendService := func(ipStr string) {
 				ip := net.ParseIP(ipStr)