Papers 47.2

(re-release of 47.1 due to CI issues not affecting the actual application)

* Fixes that might be noteworthy for downstreams (in main and picked for 47.2):
- Backwards compatible fix for supporting glib-macros >= 0.20.3 (#278 Fails to build with newer glib-macros)
- Libadwaita dep relaxed from >=1.6.beta to >=1.6
- Requirement for cargo-fmt dropped for build type release
- Fix libview header paths
- Disable validate URL availability of appstream metadata (no net)

* Other bugs fixed in main and picked for 47.2:
- #240 Crash with documents dragged and dropped onto Papers
- #251 Crash clicking "Expand all under this element"
- #254 Text marker in page number entry disappearing
- #125 Excessive zooming with continously scrolling mice
- #262 Text selection does not copy content for middle mouse button
- Miscalculated pointer location
- Fetching attachments leaked memory
- Potential crash due to race condition in search context and attachment context
- Critical on close due to ongoing timeout while scrolling
- #306 annotation windows erroneously made transparent based on annotation's opacity
- #263 help window not shown inside Flatpak's sandbox

* Translation updates:
- Slovenian (Martin S.)
- Georgian (Ekaterine Papava)
- Chinese (China) (lumingzh)
- Hebrew (Yosef Or Boczko)
- Persian (Danial Behzadi)
- Swedish (Anders Jonsson)
- Ukrainian (Yuri Chornoivan)
- Hungarian (Balázs Úr)
- Portuguese (Hugo Carvalho)
- German (Jürgen Benvenuti)
- Occitan (Quentin PAGÈS)