ci: remove unavailable K8s 1.22 from GKE config

[ upstream commit 4440b3e ]

As of August 08 2023, K8s version 1.22 is no longer available for GKE
clusters.

Therefore, this commit removes the version from the CI GKE matrix
configuration.

Signed-off-by: Marco Hofstetter <marco.hofstetter@isovalent.com>
Signed-off-by: Jussi Maki <jussi@isovalent.com>

.github/actions/gke/k8s-versions.yaml

@@ -1,19 +1,16 @@
 # List of k8s version for GKE tests
 ---
 k8s:
-  - version: "1.22"
-    zone: northamerica-northeast1-c
-    vmIndex: 1
   - version: "1.23"
     zone: europe-west6-b
-    vmIndex: 2
+    vmIndex: 1
   - version: "1.24"
     zone: us-west2-a
-    vmIndex: 3
+    vmIndex: 2
   - version: "1.25"
     zone: asia-northeast1-c
-    vmIndex: 4
+    vmIndex: 3
   - version: "1.26"
     zone: europe-north1-b
-    vmIndex: 5
+    vmIndex: 4
     default: true