ci: remove k8s version 1.26 from ci-aks

This commit removes the deleted k8s version from the ci-aks workflow.

Note: As of now, k8s 1.30 is not available on Azure AKS.

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

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

@@ -1,16 +1,13 @@
 # List of k8s version for AKS tests
 ---
 include:
-  - version: "1.26"
-    location: westus3
-    index: 1
   - version: "1.27"
     location: westus2
-    index: 2
+    index: 1
   - version: "1.28"
     location: eastus2
-    index: 3
+    index: 2
   - version: "1.29"
     location: eastus
-    index: 4
+    index: 3
     default: true