🔧 Add timeout to request calls

[tomuben]

Background

It is recommended to use timeouts for requests API, see https://requests.readthedocs.io/en/latest/user/advanced/#timeouts.

Acceptance Criteria

Add a timeout (maybe 1m) to all request calls:

• in https://github.com/exasol/bucketfs-python/blob/ae8378a1b267cca45eab9b6641020acd26995358/exasol/bucketfs/_service.py
• in https://github.com/exasol/bucketfs-python/blob/ae8378a1b267cca45eab9b6641020acd26995358/exasol/bucketfs/_buckets.py