chore(deps): update postgres docker tag to v18.4 (#1357)

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

Author: renovate[bot]

.github/workflows/ci.yml

@@ -27,7 +27,7 @@ jobs:
       OTP_VERSION: 28.3.1
     services:
       postgres:
-        image: postgres:18.3
+        image: postgres:18.4
         env:
           POSTGRES_USER: postgres
           POSTGRES_PASSWORD: postgres