RELEASE docs: Add our other social media accounts...

...and some other updates.

docs/RELEASE.txt

@@ -151,42 +151,30 @@ Website updates
 
 Announcements
 -------------
- * Managed by Tux Paint
+ * Tux Paint website
+   - Site: https://tuxpaint.org/
 
-   + Tux Paint website
+ * Tux Paint project social media accounts
-     - Site: https://tuxpaint.org/
+   (currently, managed by Bill Kendrick)
-     - Submissions: [add announcement to /latest/]
 
-   + Tux Paint on Facebook
+   + BlueSky - https://bsky.app/profile/tuxpaint.bsky.social
-     - Site: https://www.facebook.com/TuxPaint
+   + Cara - https://cara.app/tuxpaint
-     - Submissions: [currently managed by Bill K.]
+   + Facebook - https://www.facebook.com/TuxPaint
-
+   + Instagram - https://www.instagram.com/tuxpaintdevs/
-   + Tux Paint on Twitter
+   + Mastodon - https://floss.social/@tuxpaint
-     - Site: https://www.facebook.com/TuxPaint
+   + Reddit - https://www.reddit.com/user/TuxPaintDevs
-     - Submissions: [currently managed by Bill K.]
+   + Threads - https://www.threads.net/@tuxpaintdevs
-
+   + TikTok - https://www.tiktok.com/@tuxpaintdevs
-   + Tux Paint on Tumblr
+   + Tumblr - https://www.tumblr.com/blog/tuxpaint
-     - Site: https://www.tumblr.com/blog/tuxpaint
+   + X (née Twitter) - https://x.com/TuxPaintTweets
-     - Submissions: [currently managed by Bill K.]
+   + YouTubr - https://www.youtube.com/@TuxPaintOfficial
-
-   + Tux Paint on Reddit
-     - https://www.reddit.com/user/TuxPaintDevs
-     - Submissions: [currently managed by Bill K.]
-
-   + Tux Paint on Mastodon
-     - https://floss.social/@tuxpaint
-     - Submissions: [currently managed by Bill K.]
-
-   + Tux Paint on Instagram
-     - https://www.instagram.com/tuxpaintdevs/
-     - Submissions: [currently managed by Bill K.]
 
  * News sites & magazines
 
    + Linux Today
      - Site: https://www.linuxtoday.com/
      - Twitter: https://twitter.com/linuxtoday
-     - Submissions: https://www.linuxtoday.com/contribute.html
+     - Submissions: https://www.linuxtoday.com/contribute-to-linuxtoday/
 
    + 9to5Linux
      - Site: https://9to5linux.com/
@@ -196,7 +184,7 @@ Announcements
    + Fossbytes
      - Site: https://fossbytes.com/
      - Twitter: https://twitter.com/Fossbytes14
-     - Submissions: admin [at] fossbytes.com
+     - Submissions: enquiry@fossbytes.com
 
    + EdTech K12 Magazine
      - Site: https://edtechmagazine.com/k12/