Update hash creation to use sha512 instead of sha1
Links
openshift/hypershift#3718: HOSTEDCP-1480: Update TLS cert hash creation with sha512
openshift/hypershift#4017: [release-4.15] HOSTEDCP-1480: Update TLS cert hash creation with sha512
openshift/hypershift#4025: [release-4.14] HOSTEDCP-1480: Update TLS cert hash creation with sha512