Loosen minizip requirement

The new minizip-ng reports itself as version 4, but should be compatible with
the old one. I doubt there will ever be much breakage here, so completely
removing the version requirement makes sense.

Warning! I have not tested minizip-ng at runtime. All my systems are stable,
I'll just see the bug reports arrive if anything's up.

--- tdesktop-6.3.2-full.orig/cmake/external/minizip/CMakeLists.txt
+++ tdesktop-6.3.2-full/cmake/external/minizip/CMakeLists.txt
@@ -10,7 +10,7 @@
 if (DESKTOP_APP_USE_PACKAGED)
     find_package(PkgConfig REQUIRED)
     if (PkgConfig_FOUND)
-        pkg_check_modules(DESKTOP_APP_MINIZIP IMPORTED_TARGET REQUIRED minizip<2.0.0)
+        pkg_check_modules(DESKTOP_APP_MINIZIP IMPORTED_TARGET REQUIRED minizip)
     endif()
 
     if (DESKTOP_APP_MINIZIP_FOUND)