Overview of Changes in CTK+ 3.25.3

IMPORTANT NOTE: 5277048 (not here) is required

update AUTHORS
Fix ctk website links
README: remove info about mailing lists
Fix [-Wmissing-field-initializers] warnings
testctk: Fix CtkActionEntry with label 'entry'
adapt debian patches from gtk+3.0 (3.24.24-4+deb11u1) and (3.24.24-4+deb11u2)
ctkprintbackendcups: reduce the scope of some variables
ci: add aptitude
reftests,symbolic-icon-translucent-color: update icon
don't make deprecated:
- cdkcolor
- cdk_cairo_set_source_color
- cdk_display_get_pointer
- cdk_display_get_window_at_pointer
- cdk_display_keyboard_ungrab
- cdk_display_pointer_ungrab
- cdk_display_pointer_is_grabbed
- cdk_display_warp_pointer
- cdk_keyboard_grab
- cdk_keyboard_ungrab
- cdk_pointer_grab
- cdk_pointer_is_grabbed
- cdk_pointer_ungrab
- cdk_window_at_pointer
- cdk_window_get_pointer
- cdk_window_process_all_updates
- cdk_window_process_updates
- cdk_window_set_debug_updates
- ctkalignment
- ctkcolorbutton
- ctkcolorsel
- ctkcolorseldialog
- ctk_button_new_from_stock
- ctk_container_get_focus_chain
- ctk_container_set_focus_chain
- ctk_container_unset_focus_chain
- ctk_dialog_get_action_area
- ctk_menu_popup
- ctk_menu_popup_for_device
- ctk_message_dialog_get_image
- ctk_message_dialog_set_image
- ctk_style_context_get_background_color
- ctk_widget_override_background_color
- ctk_widget_override_color
Avoid deprecated in the inline comments if no deprecation guards were found around the declaration
avoid unneeded G_GNUC_BEGIN/END_IGNORE_DEPRECATIONS at some points
Update translations

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