upgrade to latest skupper

Author: jiridanek

.github/actions/skupper-integration-tests/action.yml

@@ -29,7 +29,7 @@ inputs:
   skupperGitRef:
     required: false
     description: Reference to skupper version
-    default: "26012483890940c14b1692bc6db7135790f922a5"
+    default: "1624d935672091e86c6fd08865d8987d83d8af49"
 
 runs:
   using: "composite"