Update deval

[vedhav]

Update the deval with main.
I remember we talked about not having deval. Did we reach an agreement regarding this?
If not, Let us update the deval to main.
If we're no longer going to use deval let us also remove it from the PR template

Check that your Pull Request is targeting the `devel` branch, Pull Requests to `main` should use the [Release Pull Request Template](https://github.com/atorus-research/xportr/tree/94_pr_template/.github/PULL_REQUEST_TEMPLATE)

[bms63]

Yes lets delete devel. I will do that right now :)