Fix vici valve names

[jacob720]

Updates vici valve names from the placeholders they were set to before. The correct names can be found with
caget -d31 BL21B-EA-GIR-01:VALVE1:POSN
caget -d31 BL21B-EA-GIR-01:VALVE2:POSN

Instructions to reviewer on how to test:

1. Confirm names are correct

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 99.12%. Comparing base (af1430f) to head (4008491).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2001   +/-   ##
=======================================
  Coverage   99.12%   99.12%           
=======================================
  Files         319      319           
  Lines       12404    12404           
=======================================
  Hits        12295    12295           
  Misses        109      109           

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