ci: update envtest k8s API versions

Signed-off-by: Mikko Ylinen <mikko.ylinen@intel.com>

Author: mythi

.github/workflows/lib-validate.yaml

@@ -70,9 +70,9 @@ jobs:
     strategy:
       matrix:
         version:
-          - 1.26.x
-          - 1.27.x
           - 1.28.x
+          - 1.29.x
+          - 1.30.x
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-go@v5