ci: drop k8s 1.21, 1.22 (#1938)

.github/workflows/ci-manual.yaml

@@ -31,8 +31,8 @@ on:
         required: false
         type: string
       k8s_versions:
-        description: 'Kubernetes Versions (comma-separated, e.g., 1.21,1.22)'
-        default: "1.21,1.22,1.23,1.24,1.25,1.26,1.27,1.28,1.29,1.30"
+        description: 'Kubernetes Versions (comma-separated, e.g., 1.29,1.30)'
+        default: "1.23,1.24,1.25,1.26,1.27,1.28,1.29,1.30"
         required: false
         type: string
       build_arguments:
@@ -88,12 +88,6 @@ jobs:
       matrix:
         k8s_version: ${{ fromJson(needs.setup.outputs.kubernetes_versions) }}
         os_distro: ${{ fromJson(needs.setup.outputs.os_distros) }}
-        # al2023 is not supporting 1.22 and below, exclude them from CI
-        exclude:
-          - os_distro: al2023
-            k8s_version: 1.21
-          - os_distro: al2023
-            k8s_version: 1.22
     steps:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # 4.1.7
         with: