Rule `lowercase_static_reference` wrongly affecting 'Parent' enum cases

### Pint Version

1.23.0

### PHP Version

8.3.1

### Description

This could be a CS-Fixer thing but the `lowercase_static_reference` rule renames enum cases named "Parent" to "parent" which breaks the code.


### Steps To Reproduce

Before:
```
enum Family
{
    case Parent;
    case Child;
}
````

After:
```
enum Family
{
    case parent;
    case Child;
}
```