Add Zend\Uri as a suggest because it is required by the Uri validator
Update the text to include Sitemap\Loc validator
Merge branch 'hotfix/4925'

Close #4925
Merge pull request #4929 from mtougeron/hotfix-validator-uri-composer

Add Zend\Uri as a suggest because it is required by the Uri & Sitemap\Loc validator
Merge branch 'hotfix/4929' into develop

Forward port #4929

Conflicts:
	library/Zend/Validator/composer.json