(#6835) [qt6] fix compilation of qt6 with_vulkan on MacOs

* add moltenVk on MacOs, when building with_vulkan=True

* override vulkan-headers

* use latest moltenvk

* use latest vulkan and moltenvm

recipes/qt/6.x.x/conanfile.py

@@ -236,8 +236,9 @@ def requirements(self):
         if self.options.with_pcre2:
             self.requires("pcre2/10.37")
         if self.options.get_safe("with_vulkan"):
-            self.requires("vulkan-loader/1.2.172")
-
+            self.requires("vulkan-loader/1.2.182")
+            if tools.is_apple_os(self.settings.os):
+                self.requires("moltenvk/1.1.4")
         if self.options.with_glib:
             self.requires("glib/2.69.2")
         if self.options.with_doubleconversion and not self.options.multiconfiguration:
@@ -747,6 +748,8 @@ def _create_plugin(pluginname, libname, type, requires):
                 gui_reqs.append("opengl::opengl")
             if self.options.get_safe("with_vulkan", False):
                 gui_reqs.append("vulkan-loader::vulkan-loader")
+                if tools.is_apple_os(self.settings.os):
+                    gui_reqs.append("moltenvk::moltenvk")
             if self.options.with_harfbuzz:
                 gui_reqs.append("harfbuzz::harfbuzz")
             if self.options.with_libjpeg == "libjpeg-turbo":