Bump the minimum CMake version required to build.

Version 3.18 in stable won't create pkg-config's .pc files, and we are
installing them now. The change might have occurred in a previous CMake
version.

debian/changelog

@@ -1,5 +1,9 @@
 qt6-base (6.3.1+dfsg-10) UNRELEASED; urgency=medium
 
+  [ Lisandro Damián Nicanor Pérez Meyer ]
+  * Bump minimum CMake version to 3.24. Version 3.18 in stable won't create
+    pkg-config's .pc files, and we are installing them now. The change might
+    have occurred in a previous CMake version.
 
  -- Debian Qt/KDE Maintainers <debian-qt-kde@lists.debian.org>  Mon, 05 Sep 2022 16:46:39 -0300
 

debian/control

@@ -2,7 +2,7 @@ Source: qt6-base
 Priority: optional
 Maintainer: Debian Qt/KDE Maintainers <debian-qt-kde@lists.debian.org>
 Uploaders: Patrick Franz <deltaone@debian.org>
-Build-Depends: cmake (>= 3.18~),
+Build-Depends: cmake (>= 3.24~),
                debhelper-compat (= 13),
                default-libmysqlclient-dev,
                dh-exec,