chore(deps): update postgres:16-alpine docker digest to 8ffca82 (#418)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

docker-compose.yml

@@ -22,7 +22,7 @@ services:
       - redis
 
   db:
-    image: postgres:16-alpine@sha256:ba32f84face8b34037fef8321d4226bc06d6885dd57bf8a52de8a2dec0f65340
+    image: postgres:16-alpine@sha256:8ffca822c1933bdc8be7dbbe9c2330974bdb43f5027f47717772fa35925412b0
     restart: unless-stopped
     volumes:
       - ./database:/var/lib/postgresql/data