sysutils/getssl Update 2.13

2.11

• issue #423 Use HTTP 1.1 as workaround atm

2.12

• issue #425 Case insensitive processing of agreement url because of HTTP/2

2.13

• update DNS checks to allow use of CNAMEs

PR: 241844
Submitted by: sanpei
Approved by: rainbow@sanitylinux.org (maintainer, timeout)