Require current version of libkleo

This is needed for Kleo::killDaemons().

GnuPG-bug-id: 5775

CMakeLists.txt

@@ -32,7 +32,7 @@ option(DISABLE_KWATCHGNUPG "Don't build the kwatchgnupg tool [default=OFF]" OFF)
 # Standalone build. Find / include everything necessary.
 set(KF5_MIN_VERSION "5.90.0")
 set(KMIME_VERSION "5.19.40")
-set(LIBKLEO_VERSION "5.19.50")
+set(LIBKLEO_VERSION "5.19.51")
 set(QT_REQUIRED_VERSION "5.15.2")
 set(GPGME_REQUIRED_VERSION "1.15.0")
 set(BOOST_REQUIRED_VERSION "1.58")