SubRipTime.to_time() does not support times over 24 hours

The .srt format stores times in hours / minutes / seconds / milliseconds, where the number of hours can be greater than 23. When converting the following subtitle to a time, `ValueError: hour must be in 0..23` is raised as datetime.time stores times in days / hours /minutes etc
```
23939
32:54:04,120 --> 32:54:09,120
 The end of the first book
```