feat: Add PostgreSQL service and database migrations to Rust component test jobs in CI workflow

- Upgrade PostgreSQL service from version 15 to 18 in api-server-test job
- Add PostgreSQL 18 service configuration to charging-engine-test and packet-gateway-test jobs
- Configure database health checks with pg_isready command for all Postgres services
- Add goose installation step to charging-engine-test and packet-gateway-test jobs
- Add database migration execution step before running tests in Rust components

.github/workflows/ci.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     services:
       postgres:
-        image: postgres:15
+        image: postgres:18
         env:
           POSTGRES_USER: test_user
           POSTGRES_PASSWORD: test_password
@@ -110,6 +110,20 @@ jobs:
   charging-engine-test:
     name: Charging Engine Tests
     runs-on: ubuntu-latest
+    services:
+      postgres:
+        image: postgres:18
+        env:
+          POSTGRES_USER: test_user
+          POSTGRES_PASSWORD: test_password
+          POSTGRES_DB: test_db
+        ports:
+          - 5432:5432
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
@@ -134,6 +148,14 @@ jobs:
         working-directory: apps/charging-engine
         run: cargo fetch
 
+      - name: Install goose
+        run: go install github.com/pressly/goose/v3/cmd/goose@latest
+
+      - name: Run database migrations
+        env:
+          DATABASE_URL: postgresql://test_user:test_password@localhost:5432/test_db?sslmode=disable
+        run: goose postgres $DATABASE_URL up migrations
+
       - name: Run tests
         working-directory: apps/charging-engine
         run: cargo test --release || true
@@ -145,6 +167,20 @@ jobs:
   packet-gateway-test:
     name: Packet Gateway Tests
     runs-on: ubuntu-latest
+    services:
+      postgres:
+        image: postgres:18
+        env:
+          POSTGRES_USER: test_user
+          POSTGRES_PASSWORD: test_password
+          POSTGRES_DB: test_db
+        ports:
+          - 5432:5432
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
@@ -169,6 +205,14 @@ jobs:
         working-directory: apps/packet-gateway
         run: cargo fetch
 
+      - name: Install goose
+        run: go install github.com/pressly/goose/v3/cmd/goose@latest
+
+      - name: Run database migrations
+        env:
+          DATABASE_URL: postgresql://test_user:test_password@localhost:5432/test_db?sslmode=disable
+        run: goose postgres $DATABASE_URL up migrations
+
       - name: Run tests
         working-directory: apps/packet-gateway
         run: cargo test --release || true