fix test config

Author: Daniel Gstoehl

ch-covidcertificate-backend-verifier/ch-covidcertificate-backend-verifier-ws/src/test/java/ch/admin/bag/covidcertificate/backend/verifier/ws/config/TestConfig.java

@@ -47,14 +47,13 @@ public class TestConfig extends WsBaseConfig {
 
     @Autowired DataSource dataSource;
 
-    @Override
     public DataSource dataSource() {
         return dataSource;
     }
 
     @Bean
     @Override
-    public Flyway flyway() {
+    public Flyway flyway(DataSource dataSource) {
         final var flyway =
                 Flyway.configure()
                         .dataSource(dataSource)