MFH: r418219

security/rubygem-ruby-saml: update from 1.2.0 to 1.3.0

• Security Fix Add extra validations to prevent Signature wrapping attacks
• Fix XMLSecurity SHA256 and SHA512 uris
• Fix Destination validation

Approved by: junovitch (mentor)
Security: CVE-2016-5697

Approved by: ports-secteam (junovitch)