fix: correct variable redeclaration in conversion test

Fix compilation errors by changing := to = for variables that are
already declared in the same scope (output and err variables).

Author: dntosas

test/e2e/suites/unmanaged/unmanaged_conversion_test.go

@@ -90,7 +90,7 @@ spec:
 			getCmd := exec.Command("kubectl", "--kubeconfig", kubeconfigPath,
 				"get", "awsclustercontrolleridentity", infrav1.AWSClusterControllerIdentityName,
 				"-o", "jsonpath={.apiVersion}")
-			output, err := getCmd.CombinedOutput()
+			output, err = getCmd.CombinedOutput()
 			Expect(err).NotTo(HaveOccurred(), "Failed to get AWSClusterControllerIdentity: %s", string(output))
 
 			apiVersion := strings.TrimSpace(string(output))
@@ -190,7 +190,7 @@ spec:
 			kubectlCmd := exec.Command("kubectl", "--kubeconfig", kubeconfigPath,
 				"get", "awsclustercontrolleridentity", infrav1.AWSClusterControllerIdentityName,
 				"-o", "jsonpath={.apiVersion}")
-			output, err := kubectlCmd.CombinedOutput()
+			output, err = kubectlCmd.CombinedOutput()
 			Expect(err).NotTo(HaveOccurred(), "kubectl get failed: %s", string(output))
 
 			apiVersion := strings.TrimSpace(string(output))