bin/gen_release_notes.py: strip '#' from gitlab bugs

If they use the `Fixes: #1` form.

Fixes: 86079447da1e00d49db0cbff9a102eb4e71e8702
       ("scripts: Add a gen_release_notes.py script")
Reviewed-by: Eric Engestrom <eric@engestrom.ch>
Reviewed-by: Juan A. Suarez <jasuarez@igalia.com>
1 file changed