Update postgres Docker tag from 17.5 to v17.6 (docker-compose.yml) (#12992)

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

Author: renovate[bot]

docker-compose.yml

@@ -120,7 +120,7 @@ services:
           source: ./docker/extra_settings
           target: /app/docker/extra_settings
   postgres:
-    image: postgres:17.5-alpine@sha256:6567bca8d7bc8c82c5922425a0baee57be8402df92bae5eacad5f01ae9544daa
+    image: postgres:17.6-alpine@sha256:a283fb08619d3517039ae2106413cad68918934025640696a966f4fa468fe376
     environment:
       POSTGRES_DB: ${DD_DATABASE_NAME:-defectdojo}
       POSTGRES_USER: ${DD_DATABASE_USER:-defectdojo}