Updated next release version to be v6.0.4

Author: arobenko

lib/include/cc_tools_qt/version.h

@@ -28,7 +28,7 @@
 #define CC_TOOLS_QT_MINOR_VERSION 0U
 
 /// @brief Patch level of the library
-#define CC_TOOLS_QT_PATCH_VERSION 3U
+#define CC_TOOLS_QT_PATCH_VERSION 4U
 
 /// @brief Macro to create numeric version as single unsigned number
 #define CC_TOOLS_QT_MAKE_VERSION(major_, minor_, patch_) \