test: Add H2 database for testing and update config

.gitea/workflows/qs.yml

@@ -9,20 +9,6 @@ jobs:
     runs-on: "ubuntu-latest"
     container:
       image: "cimg/openjdk:21.0-node"
-    services:
-      postgres:
-        image: postgres:16.4
-        env:
-          POSTGRES_DB: lf8_starter_db
-          POSTGRES_USER: lf8_starter
-          POSTGRES_PASSWORD: secret
-        ports:
-          - 5432:5432
-        options: >-
-          --health-cmd="pg_isready -U lf8_starter"
-          --health-interval=10s
-          --health-timeout=5s
-          --health-retries=3
     steps:
       - name: "Checkout"
         uses: actions/checkout@v3