Update composer.lock with new saml2lib 0.4.1.

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@3397 44740490-163a-0410-bde0-09ae8108e29a
Honour UIInfo/DisplayName in IdP's metadata in the IdP selection templates.

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@3398 44740490-163a-0410-bde0-09ae8108e29a