chore(deps): update postgres:18.0-alpine docker digest from 18.0 to 18.0-alpine (docker-compose.yml) (#13503)

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:18.0-alpine@sha256:f898ac406e1a9e05115cc2efcb3c3abb3a92a4c0263f3b6f6aaae354cbb1953a
+    image: postgres:18.0-alpine@sha256:48c8ad3a7284b82be4482a52076d47d879fd6fb084a1cbfccbd551f9331b0e40
     environment:
       POSTGRES_DB: ${DD_DATABASE_NAME:-defectdojo}
       POSTGRES_USER: ${DD_DATABASE_USER:-defectdojo}