Update docker.io/pretalx/standalone Docker tag to v2025.2.3

.forgejo/workflows/deploy-docs.yaml

@@ -23,7 +23,7 @@ jobs:
           apt -y install nodejs git rsync openssh-client
           pip install --upgrade pip
 
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v6
 
       - name: Install Python packages
         run: |

.forgejo/workflows/lint.yaml

@@ -10,7 +10,7 @@ jobs:
     name: Ansible Lint
     runs-on: docker
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v6
       - name: Install pip
         run: |
           apt update

resources/external/status/docker_compose/config/websites.yaml

@@ -124,7 +124,7 @@ endpoints:
     conditions:
       - "[STATUS] == 200"
       - "[CERTIFICATE_EXPIRATION] > 48h"
-      - "[BODY] == pat(*STATUS_CANARY_HAMBURG_CCC_DE_DO_NOT_TOUCH*)"
+      - "[BODY] == pat(*Wir sind der Chaos Computer Club der Hansestadt Hamburg:*)"
 
   - name: spaceapi.ccc.de
     url: "https://spaceapi.ccc.de"