Use new registration token for gitea runner.

gitea/docker-compose.yaml

@@ -83,6 +83,6 @@ services:
       - /var/run/docker.sock:/var/run/docker.sock
     environment:
       - GITEA_INSTANCE_URL=https://gitea.steinle-computer.de
-      - GITEA_RUNNER_REGISTRATION_TOKEN=flpCcwO0Dw6u4jtWT2wMBrBWuFZ8HDdS4qV277tH
+      - GITEA_RUNNER_REGISTRATION_TOKEN=jMMDhDpMzlmtN2pXzVj6qcAdlGEpDb8dmzbfmdm8
     networks:
       - gitea