chore(deps): update postgres:18.3-alpine docker digest to 54451ec (#1474)

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

Author: renovate[bot]

.github/workflows/test.yml

@@ -21,7 +21,7 @@ jobs:
         ports:
         - 6379:6379
       postgres:
-        image: postgres:18.3-alpine@sha256:d164db0c6b4fc00e438f160b4480f207f3f837cf60f781c61670af4ef71a8062
+        image: postgres:18.3-alpine@sha256:54451ecb8ab38c24c3ec123f2fd501303a3a1856a5c66e98cecf2460d5e1e9d7
         ports:
         - 5432:5432
         # needed because the postgres container does not provide a healthcheck