ci: skip failing test TestOtelKubeStackHelm (#10021) (#10025)

(cherry picked from commit ece5356)

Co-authored-by: Panos Koutsovasilis <[email protected]>

Author: mergify[bot]

testing/integration/k8s/otel_helm_test.go

@@ -43,6 +43,7 @@ func TestOtelKubeStackHelm(t *testing.T) {
 		},
 		Group: define.Kubernetes,
 	})
+	t.Skip("https://github.com/elastic/elastic-agent/issues/10020: Constantly failing test")
 
 	kCtx := k8sGetContext(t, info)