fix dependencies

debian/control

@@ -10,12 +10,12 @@ Build-Depends:
  debhelper (>= 9),
  libx11-dev,
  pkg-config,
- libkf5windowsystem-dev (>= 5.5.0),
+ libkf5windowsystem-dev (>= 5.9.0),
  liblxqt0-dev (>= 0.9.0),
- libqt5x11extras5-dev (>= 5.3.2),
+ libqt5x11extras5-dev (>= 5.3),
- libqt5xdg-dev (>= 1.1.0),
+ libqt5xdg-dev (>= 1.2.0),
- qttools5-dev (>= 5.3.2),
+ qttools5-dev (>= 5.3),
- qttools5-dev-tools (>= 5.3.2),
+ qttools5-dev-tools (>= 5.3),
 Standards-Version: 3.9.6
 Homepage: https://github.com/lxde/lxqt-about
 Vcs-Git: git://anonscm.debian.org/pkg-lxqt/lxqt-about.git