Merge pull request #30163 from bene2k1/de-fix-kubecon-dates-20211020

[de] Fix homepage kubecon dates

Author: k8s-ci-robot

content/de/_index.html

@@ -42,12 +42,12 @@ <h2>Die Herausforderungen bei der Migration von über 150 Microservices auf Kube
         <button id="desktopShowVideoButton" onclick="kub.showVideo()">Video ansehen</button>
         <br>
         <br>
-        <a href="https://events.linuxfoundation.org/kubecon-cloudnativecon-europe/?utm_source=kubernetes.io&utm_medium=nav&utm_campaign=kccnceu20" button id="desktopKCButton">Besuche die KubeCon - 13-16 August 2020 in Amsterdam</a>
+        <a href="https://events.linuxfoundation.org/kubecon-cloudnativecon-north-america/?utm_source=kubernetes.io&utm_medium=nav&utm_campaign=kccncna21" button id="desktopKCButton">Besuche die KubeCon North America vom 11. bis 15. Oktober 2021</a>
         <br>
         <br>
         <br>
         <br>
-        <a href="https://events.linuxfoundation.org/kubecon-cloudnativecon-north-america/?utm_source=kubernetes.io&utm_medium=nav&utm_campaign=kccncna20" button id="desktopKCButton">Besuche die KubeCon - 17-20 November 2020 in Boston</a>
+        <a href="https://events.linuxfoundation.org/kubecon-cloudnativecon-europe-2022/?utm_source=kubernetes.io&utm_medium=nav&utm_campaign=kccnceu22" button id="desktopKCButton">Besuche die KubeCon Europe vom 17. bis 20. Mai 2022</a>
 </div>
 <div id="videoPlayer">
     <iframe data-url="https://www.youtube.com/embed/H06qrNmGqyE?autoplay=1" frameborder="0" allowfullscreen></iframe>