Doc: Update the outdated production readiness statues section (#2690)

Signed-off-by: Yuki Iwai <[email protected]>

Author: tenzen-y

README.md

@@ -36,10 +36,10 @@ Read the [overview](https://kueue.sigs.k8s.io/docs/overview/) to learn more.
   - ✔️ Unit Test [testgrid](https://testgrid.k8s.io/sig-scheduling#periodic-kueue-test-unit-main).
   - ✔️ Integration Test [testgrid](https://testgrid.k8s.io/sig-scheduling#periodic-kueue-test-integration-main)
   - ✔️ E2E Tests for Kubernetes
-    [1.25](https://testgrid.k8s.io/sig-scheduling#periodic-kueue-test-e2e-main-1-25),
-    [1.26](https://testgrid.k8s.io/sig-scheduling#periodic-kueue-test-e2e-main-1-26),
     [1.27](https://testgrid.k8s.io/sig-scheduling#periodic-kueue-test-e2e-main-1-27),
-    [1.28](https://testgrid.k8s.io/sig-scheduling#periodic-kueue-test-e2e-main-1-28)
+    [1.28](https://testgrid.k8s.io/sig-scheduling#periodic-kueue-test-e2e-main-1-28),
+    [1.29](https://testgrid.k8s.io/sig-scheduling#periodic-kueue-test-e2e-main-1-29),
+    [1.30](https://testgrid.k8s.io/sig-scheduling#periodic-kueue-test-e2e-main-1-30) 
     on Kind.
 - ✔️ Scalability verification via [performance tests](https://github.com/kubernetes-sigs/kueue/tree/main/test/performance).
 - ✔️ Monitoring via [metrics](https://kueue.sigs.k8s.io/docs/reference/metrics).