Update changelog (#7476)

* Added changelog for 980

Co-authored-by: Mohammed Anas <triallax@tutanota.com>

fastlane/metadata/android/en-US/changelogs/980.txt

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+New
+• Added "Add to playlist" option to share menu
+• Added support for y2u.be and PeerTube short links
+
+Improved
+• Made Playback-Speed-Controls more compact
+• Feed highlights new items now
+• "Show watched items" option in the feed is now saved
+
+Fixed
+• Fixed YouTube likes and dislikes extraction
+• Fixed automatic replay after returning from the background
+And much more