Fix new ruff linting

[DominicOram]

Fixes #1117

Instructions to reviewer on how to test:

1. Install the latest ruff version (pip install --upgrade ruff)
2. On main run ruff check, confirm there are errors
3. On this branch run ruff check and confirm no errors

Checks for reviewer

• Would the PR title make sense to a scientist on a set of release notes
• If a new device has been added does it follow the standards
• If changing the API for a pre-existing device, ensure that any beamlines using this device have updated their Bluesky plans accordingly
• Have the connection tests for the relevant beamline(s) been run via dodal connect ${BEAMLINE}

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.71%. Comparing base (50d6766) to head (e1f2ee8).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1118   +/-   ##
=======================================
  Coverage   97.71%   97.71%           
=======================================
  Files         164      164           
  Lines        6690     6690           
=======================================
  Hits         6537     6537           
  Misses        153      153           

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[callumforrester]

LGTM!