Update social media links in README

Replaced Twitter link with Bluesky link in contact section.

Signed-off-by: Christian Oliff <christianoliff@pm.me>

Author: coliff

profile/README.md

@@ -31,12 +31,11 @@ Enterprise? Public Sector or Education user? You may want to have a look into [*
 
 * [📋 Forum](https://help.nextcloud.com)
 * [👥 Facebook](https://www.facebook.com/nextclouders)
-* [🐣 Twitter](https://twitter.com/Nextclouders)
+* [🐣 Bluesky](https://bsky.app/profile/nextcloud.bsky.social)
 * [🐘 Mastodon](https://mastodon.xyz/@nextcloud)
 
 You can also [get support for Nextcloud](https://nextcloud.com/support)!
 
-
 ## Join the team 👪
 
 There are many ways to contribute, of which development is only one! Find out [how to get involved](https://nextcloud.com/contribute/), including as a [translator](https://help.nextcloud.com/t/translation-knowledge-valid-for-the-entire-nextcloud-project-wiki/51550), designer, tester, helping others, and much more! 😍