Revert "Remove redundant const"

This reverts commit 51d34546.

source/RobotAPI/libraries/skills_gui/skill_details/ProfileMenuWidget.h

@@ -13,11 +13,11 @@ namespace armarx::skills::gui
     {
         Q_OBJECT
     public:
-        static constexpr char* SET_ARGS_BUTTON_TEXT = "Set Args from Clipboard";
-        static constexpr char* COPY_ARGS_BUTTON_TEXT = " Copy Args to Clipboard";
-        static constexpr char* RESET_ARGS_BUTTON_TEXT = " Reset Args to Profile";
-        static constexpr char* DEFAULT_PROFILE_TEXT = "<No Profile selected. Using root>";
-        static constexpr char* PROFILE_NOT_IMPLEMENTED =
+        static const constexpr char* SET_ARGS_BUTTON_TEXT = "Set Args from Clipboard";
+        static const constexpr char* COPY_ARGS_BUTTON_TEXT = " Copy Args to Clipboard";
+        static const constexpr char* RESET_ARGS_BUTTON_TEXT = " Reset Args to Profile";
+        static const constexpr char* DEFAULT_PROFILE_TEXT = "<No Profile selected. Using root>";
+        static const constexpr char* PROFILE_NOT_IMPLEMENTED =
             "Profiles other than the root profile are currently not supported.";
 
         // contents are public, as this class is just a convenience wrapper