Gitma does not support python versions other than 3.9

When installing gitma package in a python environment other than 3.9 , following error pops up. This could be problematic, especially in hosted notebook environments such as Colab where specifics of the environment cannot be changed by the user.

```
ERROR: Package 'gitma' requires a different Python: 3.13.4 not in '==3.9.*'
```