Log Message:
ristretto: update to 0.12.3

Change log:

0.12.3 (2022-07-09)
======
- Bug Fixes:
  - thumbnailer: Fall back on lower qualities in case of unsupported flavor (#81)
  - Secure error handling when opening multiple files
  - Use `G_FILE_MONITOR_WATCH_MOVES` for file monitoring
  - Do not keep sticky state when current file is removed
  - Fix management of transaction source id
  - Correctly handle deletion when there is only one image (#89)
  - Update iter list on insertion and deletion (#88)
  - build: Fix intltool lock file problem during make distcheck
  - Display error message on stderr
  - i18n: Use `xfce_textdomain()` to initialize translations
  - Ensure that an error is set if no pixbuf is available
  - Fix some memory leaks

- Code Refactoring:
  - flatpak: Some updates from Flathub
  - Remove old icon files
  - Remove TODO file
  - Flatpak: Add libopenraw dependency

- Translation Updates:
  Chinese (China), Danish, Greek, Korean, Malay, Portuguese (Brazil),
  Turkish