useBeanValidation option results in deprecated API usage

When configuring `useBeanValidation` to `true`, generated classes seem to use deprecated attribute `required`  from `io.swagger.v3.oas.annotations.media.Schema`.

```java
@Schema(required = true, description = "")
public String getId() {
    return id;
}
```

```
required() in io.swagger.v3.oas.annotations.media.Schema has been deprecated
```