ci: refresh k8s version, add 1.33.0

Signed-off-by: Lan Liang <gcslyp@gmail.com>

Author: liangyuanpeng

.github/workflows/e2e.yaml

@@ -63,7 +63,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        k8s: [ v1.30.8, v1.31.4, v1.32.0 ]
+        k8s: [ v1.31.4, v1.32.0, v1.33.0 ]
         connection-mode: [ grpc, http-connect ]
     steps:
     - name: Install kind
@@ -106,7 +106,7 @@ jobs:
       fail-fast: false
       matrix:
         ipFamily: ["ipv4", "ipv6", "dual"]
-        k8s: [ v1.30.8, v1.31.4, v1.32.0 ]
+        k8s: [ v1.31.4, v1.32.0, v1.33.0 ]
     env:
       JOB_NAME: "kindnetd-e2e-${{ matrix.ipFamily }}"
       IP_FAMILY: ${{ matrix.ipFamily }}