Update permissions.py

Signed-off-by: plun1331 <plun1331@gmail.com>

discord/permissions.py

@@ -626,6 +626,17 @@ def set_voice_channel_status(self) -> int:
         """
         return 1 << 48
 
+    @flag_value
+    def use_external_apps(self) -> int
+        """:class:`bool`: Returns ``True`` if a member's user-installed apps can show public responses.
+        Users will still be able to use user-installed apps, but responses will be ephemeral.
+        
+        This only applies to apps that are also not installed to the guild.
+
+        .. versionadded:: 2.6
+        """
+        return 1 << 50
+
 
 PO = TypeVar("PO", bound="PermissionOverwrite")