Use DICOM timeout for getting answer instances

[stefpiatek]

Description

Found a lot of timeout when running, expect this should fix them but will leave this running for a day to check.

Type of change

Please delete options accordingly to the description.

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update

Suggested Checklist

• [x] I have performed a self-review of my own code.
• [x] I have made corresponding changes to the documentation.
• [x] My changes generate no new warnings.
• [x] I have commented my code, particularly in hard-to-understand areas.
• [x] I have passed on my local host device. (see further details at the CONTRIBUTING document)
• [x] Make sure your branch is up-to-date with main branch. See CONTRIBUTING for a general example to syncronise your branch with the main branch.
• [x] I have requested PR review to UCLH-Foundtry/arc-dev
• [x] I have adddressed and marked as resolved all the review comments in my PR.
• [x] Finally, I have selected squash and merge

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 87.78%. Comparing base (b66b3ee) to head (560a5e2). Report is 1 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #504 +/- ## ======================================= Coverage 87.78% 87.78% ======================================= Files 76 76 Lines 3414 3415 +1 ======================================= + Hits 2997 2998 +1 Misses 417 417 ```

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