Advance e2e test matrix (make e2e and kind-e2e consistent).

Author: jkh52

.github/workflows/e2e.yaml

@@ -62,7 +62,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        k8s: [ v1.28.7, v1.29.2, v1.30.4 ]
+        k8s: &k8s-versions [ v1.30.8, v1.31.4, v1.32.0 ]
         connection-mode: [ grpc, http-connect ]
     steps:
     - name: Install kind
@@ -105,7 +105,7 @@ jobs:
       fail-fast: false
       matrix:
         ipFamily: ["ipv4", "ipv6", "dual"]
-        k8s: [ v1.30.8, v1.31.4, v1.32.0 ]
+        k8s: *k8s-versions
     env:
       JOB_NAME: "kindnetd-e2e-${{ matrix.ipFamily }}"
       IP_FAMILY: ${{ matrix.ipFamily }}