GNOME Screenshot 3.32.0

- Update the icon to match the GNOME 3.32 icon guidelines [Jakub Steiner, Cosimo Cecchi]
- Replace deprecated API [Jente Hidskes]
- Update the required version of GTK to 3.12 [#761946, Andre Klapper]
- Translation updates:
  Esperanto, Czech, Slovenian, Malayam, Spanish, Greek, Friulan, Swedish,
  French, Japanese, Hungarian, Romanian, Indonesian, Finnish, Turkish,
  Danish, Kazakh, Chinese (Taiwan), Dutch, Lithuanian, Korean, Russian,
  Brazilian Portuguese, Italian, Serbian, German, Latvian
This tag has no release notes.