hardcode version in conformance test

test/e2e/conformance_test.go

@@ -87,15 +87,16 @@ var _ = Describe("Conformance Tests", func() {
 
 		var err error
 
-		kubernetesVersion := e2eConfig.GetVariable(capi_e2e.KubernetesVersion)
+		kubernetesVersion := "v1.28.15"
+		Expect(os.Setenv("CI_VERSION", "v1.28.15")).To(Succeed())
 		flavor := e2eConfig.GetVariable("CONFORMANCE_FLAVOR")
+		useCIArtifacts = true
 
 		// clusters with CI artifacts or PR artifacts are based on a known CI version
 		// PR artifacts will replace the CI artifacts during kubeadm init
 		if useCIArtifacts || usePRArtifacts {
 			kubernetesVersion, err = resolveCIVersion(kubernetesVersion)
 			Expect(err).NotTo(HaveOccurred())
-			Expect(os.Setenv("CI_VERSION", kubernetesVersion)).To(Succeed())
 			Expect(os.Setenv("CLOUD_PROVIDER_AZURE_LABEL", "azure-ci")).To(Succeed())
 		}