DEB wv2: Add ninja-build to Build-Depends.

Signed-off-by: Slávek Banko <slavek.banko@axis.cz>

debian/wv2/wv2-0.4.2.dfsg.2/debian/changelog

@@ -1,4 +1,4 @@
-wv2 (0.4.2.dfsg.2-2debian11.0.0+2~a) bullseye; urgency=low
+wv2 (0.4.2.dfsg.2-2debian11.0.0+3~a) bullseye; urgency=low
 
   * Switch to cdbs
   * Switch to build using ninja-build

debian/wv2/wv2-0.4.2.dfsg.2/debian/control

@@ -2,7 +2,7 @@ Source: wv2
 Section: deps-r14/libs
 Priority: optional
 Maintainer: Olly Betts <olly@survex.com>
-Build-Depends: cdbs, debhelper (>= 9), quilt, cmake, libglib2.0-dev, libgsf-1-dev (>= 1.14.0), libxml2-dev, zlib1g-dev, pkg-config, python-all
+Build-Depends: cdbs, debhelper (>= 9), quilt, cmake, ninja-build, libglib2.0-dev, libgsf-1-dev (>= 1.14.0), libxml2-dev, zlib1g-dev, pkg-config, python-all
 Standards-Version: 3.9.4
 Homepage: http://wvware.sourceforge.net