Update docker.io/library/mariadb Docker tag to v12

resources/chaosknoten/public-reverse-proxy/nginx/acme_challenge.conf

@@ -89,7 +89,6 @@ map $host $upstream_acme_challenge_host {
     staging.infra-docs.hamburg.ccc.de public-web-static.hosts.hamburg.ccc.de:31820;
     didays.de public-web-static.hosts.hamburg.ccc.de:31820;
     staging.didays.de public-web-static.hosts.hamburg.ccc.de:31820;
-    www.didays.de public-web-static.hosts.hamburg.ccc.de:31820;
     ueberwachungsfrei.eu public-web-static.hosts.hamburg.ccc.de:31820;
     überwachungsfrei.eu public-web-static.hosts.hamburg.ccc.de:31820;
     xn--berwachungsfrei-yvb.eu public-web-static.hosts.hamburg.ccc.de:31820;

resources/chaosknoten/public-reverse-proxy/nginx/nginx.conf

@@ -113,7 +113,6 @@ stream {
         staging.infra-docs.hamburg.ccc.de public-web-static.hosts.hamburg.ccc.de:8443;
         didays.de public-web-static.hosts.hamburg.ccc.de:8443;
         staging.didays.de public-web-static.hosts.hamburg.ccc.de:8443;
-        www.didays.de public-web-static.hosts.hamburg.ccc.de:8443;
         ueberwachungsfrei.eu public-web-static.hosts.hamburg.ccc.de:8443;
         überwachungsfrei.eu public-web-static.hosts.hamburg.ccc.de:8443;
         xn--berwachungsfrei-yvb.eu public-web-static.hosts.hamburg.ccc.de:8443;

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

@@ -224,14 +224,6 @@ endpoints:
       - "[CERTIFICATE_EXPIRATION] > 48h"
       - "[BODY] == pat(*Digitale Selbstverteidigung in Hamburg*)"
 
-  - name: www.didays.de
-    url: "https://www.didays.de"
-    <<: *websites_redirects_defaults
-    conditions:
-      - "[STATUS] == 200"
-      - "[CERTIFICATE_EXPIRATION] > 48h"
-      - "[BODY] == pat(*Digitale Unabhängigkeit*)"
-
   - name: local.ccc.de
     url: "https://local.ccc.de"
     <<: *websites_redirects_defaults