removed handling for general exception for boto3 in transcoding app

[umar8hassan]

What are the relevant tickets?

part of https://github.com/mitodl/hq/issues/7328

Description (What does it do?)

this adds filtering for thumbnail groups based on the provided parameter

How can this be tested?

Anyone interested in testing it locally can do so using the ocw-studio repository, as follows:

1. Switch to this branch in the local repository.
2. Run the following:

docker-compose build
docker-compose run --rm -ti shell bash

# inside shell
uv build --package mitol-django-transcoding

3. Check that you have a mitol_django_transcoding-xxxx.x.xx.tar.gz file in dist/
4. Move dist/mitol_django_transcoding-xxxx.x.xx.tar.gz to OCW studio local repository.
5. Switch to the master branch in the OCW-Studio local repository.
6. Spin up containers after rebuilding: docker-compose up -d --build
7. Add a transcoding job by adding video via GitHub flow
8. Verify the Job data from the Django admin