build(tests): show database roles

Refs: #1

Author: piraz

.github/workflows/run_tests.yml

@@ -16,10 +16,10 @@ jobs:
       - name: Install postgres
         run: |
           psql postgresql://postgres:postgres@localhost:5432/postgres -f ./scripts/postgres/roles.sql
+          psql postgresql://postgres:postgres@localhost:5432/postgres -c "\dg"
           psql postgresql://postgres:postgres@localhost:5432/postgres -c "SELECT 1"
           psql service=postgres -c "SELECT 1"
           psql -c "SELECT 1"
-          su - postgresql
         env:
           PGSERVICE: postgres
       - name: Setup Go ${{ matrix.go-version }}