Switch E3683 to E3684 for health check protocol

[kddejong]

Issue #, if available:
fix #4093
Description of changes:

• Switch E3683 to E3684 for health check protocol

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[codecov]

Codecov Report

Attention: Patch coverage is 94.11765% with 1 line in your changes missing coverage. Please review.

Project coverage is 94.20%. Comparing base (72d3c8b) to head (b3e0dde).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...ngv2/TargetGroupHealthCheckProtocolRestrictions.py	94.11%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4094      +/-   ##
==========================================
- Coverage   94.23%   94.20%   -0.03%     
==========================================
  Files         389      390       +1     
  Lines       13390    13407      +17     
  Branches     2650     2652       +2     
==========================================
+ Hits        12618    12630      +12     
- Misses        421      423       +2     
- Partials      351      354       +3     

Flag	Coverage Δ
unittests	94.18% <94.11%> (-0.03%)	⬇️

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