Log Message:
gtk3: updated to 3.24.30

Overview of Changes in GTK+ 3.24.30
===================================

* Input:
 - Ignore NoSymbol key events (happens with some XKB options)
 - Fix incomplete reset in some cases

* GtkEmojiChooser:
 - Update data from CLDR 39
 - Support translated keywords for multiple languages
 - Allow inserting multiple Emoji with Ctrl
 - Match keywords for search
 - Fix a memory leak

* GtkFileChooser:
 - Accessibility improvements

* GtkTreeView
 - Fix an accessibility-related memory leak
 - Fix assertion failures in some cases

* Printing:
 - Remove the Google Cloud Print backend, since the
   service was shut down

* Wayland:
 - Work with pointer-gestures v1 protocol

* Win32:
 - Fix using GL with Mesa drivers
 - Add support for Windows Pointer Input stack

* MacOS:
 - Fix a crash with Drag-and-Drop

* Translation updates:
 Belarusian
 Brazilian Portuguese
 British English
 Catalan
 Indonesian
 Lithuanian
 Nepali
 Norwegian Bokmål
 Occitan
 Portuguese
 Romanian
 Russian
 Serbian
 Slovenian
 Spanish
 Turkish
 Ukrainian