remove docker.io as it is not needed

templates/compose/authentik.yaml

@@ -72,7 +72,7 @@ services:
       redis:
         condition: service_healthy
   postgresql:
-    image: docker.io/library/postgres:16-alpine
+    image: postgres:16-alpine
     restart: unless-stopped
     healthcheck:
       test: ["CMD-SHELL", "pg_isready -d $${POSTGRES_DB} -U $${POSTGRES_USER}"]
@@ -86,7 +86,7 @@ services:
       - POSTGRES_USER=${SERVICE_USER_POSTGRESQL}
       - POSTGRES_DB=authentik
   redis:
-    image: docker.io/library/redis:alpine
+    image: redis:alpine
     command: --save 60 1 --loglevel warning
     restart: unless-stopped
     healthcheck: