fix off-by-one on the version restriction for dnssd
Summary: 5.54 had the fix, so anything greater 5.53 would do
Reviewers: broulik, ngraham
Reviewed By: ngraham
Subscribers: kde-frameworks-devel, kfm-devel
Tags: Dolphin, Frameworks
Differential Revision: https://phabricator.kde.org/D18981