ci: remove unnecessary container names in workflow config

.github/workflows/playwright.yml

@@ -12,7 +12,6 @@ jobs:
     runs-on: ubuntu-latest
     services:
       postgres-employee:
-        container_name: postgres_employee
         image: postgres:13.3
         env:
           POSTGRES_DB: employee_db
@@ -20,15 +19,12 @@ jobs:
           POSTGRES_PASSWORD: secret
 
       employee:
-        container_name: employee
         image: berndheidemann/employee-management-service:1.1.3
         # image: berndheidemann/employee-management-service_without_keycloak:1.1
         env:
           spring.datasource.url: jdbc:postgresql://postgres-employee:5432/employee_db
           spring.datasource.username: employee
           spring.datasource.password: secret
-        depends_on:
-          - postgres-employee
 
 
     steps: