fix: adguard and authentik use /opt bind mounts (original Portainer paths)

Data was in /opt/adguard/{work,conf} and /opt/authentik/{postgres,redis}
all along. Previous commit used named volumes which would ignore this data.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

adguard/docker-compose.yml

@@ -6,8 +6,8 @@ services:
     restart: unless-stopped
 
     volumes:
-      - adguard-work-path:/opt/adguardhome/work:Z
-      - adguard-conf-path:/opt/adguardhome/conf:Z
+      - /opt/adguard/work:/opt/adguardhome/work:Z
+      - /opt/adguard/conf:/opt/adguardhome/conf:Z
       - adguard-cert-crt-path:/certs/adguard.crt:ro,Z
       - adguard-cert-key-path:/certs/adguard.key:ro,Z
 
@@ -26,8 +26,6 @@ services:
       traefik.http.services.adguard.loadbalancer.server.port: "${ADGUARD_HTTP_PORT}"
 
 volumes:
-  adguard-work-path:
-  adguard-conf-path:
   adguard-cert-crt-path:
   adguard-cert-key-path: