Update CTA for jupytercon

Author: choldgraf

mybinder/values.yaml

@@ -186,15 +186,11 @@ binderhub:
             🤍 Donate to mybinder.org!
         </a>
         <div style="text-align:center;">
-        🚀 JupyterCon 2025 is November 5th in San Diego, CA!
-        See the <a href="https://events.linuxfoundation.org/jupytercon/program/schedule/?ajs_aid=53afb00d-be65-4a99-9112-28cdaac99463">JupyterCon schedule here</a>.
-        <a href="https://events.linuxfoundation.org/jupytercon/register/?ajs_aid=53afb00d-be65-4a99-9112-28cdaac99463"><button class="btn btn-primary">Register for JupyterCon</button></a>
+        Join us in San Diego · JupyterCon 2025 · Nov 4-5 · <a href="https://events.linuxfoundation.org/jupytercon/program/schedule/?ajs_aid=53afb00d-be65-4a99-9112-28cdaac99463">SCHEDULE</a> · <a href="https://events.linuxfoundation.org/jupytercon/register/?ajs_aid=53afb00d-be65-4a99-9112-28cdaac99463">REGISTER NOW</a>
         </div>
-        <!-- Un-comment when we are past JupyterCon
         <div style="text-align:center;">
-        Thanks to <a href="https://www.gesis.org">GESIS</a> and <a href="https://2i2c.org">2i2c</a> for supporting us! 🎉
+        Thanks to <a href="https://www.gesis.org">GESIS</a> and <a href="https://2i2c.org">2i2c</a> for supporting mybinder.org! 🎉
         </div>
-        -->
       about_message: |
         <p>mybinder.org is public infrastructure operated by the <a href="https://jupyterhub-team-compass.readthedocs.io/en/latest/team.html#binder-team">Binder Project team</a>.<br /><br />
         The Binder Project is a member of <a href="https://jupyter.org">Project Jupyter</a>.