[TASK] change social media link

Resources/Private/Templates/Page/Default.html

@@ -50,7 +50,7 @@
                 <div class="footer-item"><a href="https://www.bmbf.de"><f:image loading="lazy" src="EXT:slub_web_bison/Resources/Public/Images/Logos/bmbf_logo.7d951be2.png" alt="BMBF logo" class="logo-img img-fluid" /></a></div>
                 <div class="footer-item"><a href="https://doaj.org"><f:image loading="lazy" src="EXT:slub_web_bison/Resources/Public/Images/Logos/doaj_logo.ed6b0d94.png" alt="DOAJ logo" class="logo-img img-fluid" /></a></div>
                 <div class="footer-item"><a href="https://opencitations.net"><f:image loading="lazy" src="EXT:slub_web_bison/Resources/Public/Images/Logos/oc_logo.d0cdd517.png" alt="OpenCitations logo" class="logo-img img-fluid" /></a></div>
-                <div class="footer-item"><a href="https://twitter.com/oa_bison"><f:image loading="lazy" src="EXT:slub_web_bison/Resources/Public/Images/Logos/bison_twitter.f77dea93.png" alt="Twitter oa_bison" class="logo-img img-fluid" /></a></div>
+                <div class="footer-item"><a href="https://openbiblio.social/@oa_bison"><f:image loading="lazy" src="EXT:slub_web_bison/Resources/Public/Images/Logos/mastodon_logo.dd49a68b.svg" alt="Twitter oa_bison" class="logo-img img-fluid" /></a></div>
                 <div class="footer-item"><a href="https://gitlab.com/TIBHannover/bison"><f:image loading="lazy" src="EXT:slub_web_bison/Resources/Public/Images/Logos/gitlab_logo.9fb4f6cf.png" alt="Gitlab logo" class="logo-img img-fluid" /></a></div>
             </div>
             <div id="legal" class="centered"><a href="https://www.slub-dresden.de/impressum" class="ms-3 me-3"

Resources/Public/Images/Logos/mastodon_logo.dd49a68b.svg

+<?xml version="1.0" encoding="UTF-8"?>
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