Update kube-burner version to incorporate fix for bare-metal installa…

…tions, see: #started with #389 and followed through in #408: kube-burner/kube-burner#408 (comment) (#383)

Co-authored-by: sferlin <[email protected]>

ansible/roles/bastion-install/defaults/main.yml

@@ -3,7 +3,7 @@
 
 coredns_url: https://github.com/coredns/coredns/releases/download/v1.10.1/coredns_1.10.1_linux_amd64.tgz
 openshift_client_url: https://mirror.openshift.com/pub/openshift-v4/x86_64/clients/ocp
-kubeburner_url: https://github.com/cloud-bulldozer/kube-burner/releases/download/v1.3/kube-burner-1.3-Linux-x86_64.tar.gz
+kubeburner_url: https://github.com/cloud-bulldozer/kube-burner/releases/download/v1.7.6/kube-burner-V1.7.6-linux-arm64.tar.gz
 grpcurl_url: https://github.com/fullstorydev/grpcurl/releases/download/v1.8.1/grpcurl_1.8.1_linux_x86_64.tar.gz
 yq_url: https://github.com/mikefarah/yq/releases/download/v4.17.2/yq_linux_amd64.tar.gz