Add Bluesky to footer

Author: matchboxbananasynergy

templates/footer.html

@@ -7,6 +7,7 @@
         <li><a href="https://grapheneos.org/hiring">Hiring</a></li>
         <li><a href="https://twitter.com/GrapheneOS">Twitter</a></li>
         <li><a href="https://grapheneos.social/@GrapheneOS">Mastodon</a></li>
+        <li><a href="https://bsky.app/profile/grapheneos.org">Bluesky</a></li>
         <li><a href="https://github.com/GrapheneOS">GitHub</a></li>
         <li><a href="https://reddit.com/r/GrapheneOS">Reddit</a></li>
         <li><a href="https://www.linkedin.com/company/grapheneos/">LinkedIn</a></li>