chore: bump version number

ytsage_gui_main.py

@@ -36,7 +36,7 @@ class YTSageApp(QMainWindow, FormatTableMixin, VideoInfoMixin): # Inherit from m
         if not check_ffmpeg():
             self.show_ffmpeg_dialog()
 
-        self.version = "4.5.6"
+        self.version = "4.5.7"
         self.check_for_updates()
         self.config_file = Path.home() / '.ytsage_config.json'
         load_saved_path(self)
@@ -255,7 +255,7 @@ class YTSageApp(QMainWindow, FormatTableMixin, VideoInfoMixin): # Inherit from m
         save_path(self, path) # Call the utility function
 
     def init_ui(self):
-        self.setWindowTitle('YTSage  v4.5.6')
+        self.setWindowTitle('YTSage  v4.5.7')
         self.setMinimumSize(900, 750)
 
         # Main widget and layout