chore(deps): update postgres:18.1-alpine docker digest to b5f0dfb (#1238)

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

Author: renovate[bot]

.github/workflows/test.yml

@@ -19,7 +19,7 @@ jobs:
         ports:
         - 6379:6379
       postgres:
-        image: postgres:18.1-alpine@sha256:eca6fb2d91fda290eb8cfb8ba53dd0dcbf3508a08011e30adb039ea7c8e1e9f2
+        image: postgres:18.1-alpine@sha256:b5f0dfb46e028c156ff4e3dd2908fdf3474e6bd7837902d0e0151e4e30ad711f
         ports:
         - 5432:5432
         # needed because the postgres container does not provide a healthcheck