chore(deps): update postgres:18 docker digest to 0033c19 (#1956)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| postgres | service | digest | `5ec39c1` -> `0033c19` |

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.github/workflows/test.yml

@@ -111,7 +111,7 @@ jobs:
         ports:
           - 3306:3306
       migration-smoke-db-postgres:
-        image: postgres:18@sha256:5ec39c188013123927f30a006987c6b0e20f3ef2b54b140dfa96dac6844d883f
+        image: postgres:18@sha256:0033c194dc640cc4dcc62ef7c3117e5791365cca5fc1a2998e5c1693254784bc
         env:
           POSTGRES_PASSWORD: vikunjatest
           POSTGRES_DB: vikunjatest