Deprecate loading GESLA gauges by 'site_code' due to duplicate values, use 'file_name' instead

[robbibt]

No description provided.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 68.75000% with 5 lines in your changes missing coverage. Please review.
✅ Project coverage is 84.6%. Comparing base (a85615f) to head (19cdc78).

Files with missing lines	Patch %	Lines
eo_tides/validation.py	68.7%	4 Missing and 1 partial ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##            main    #154     +/-   ##
=======================================
- Coverage   84.9%   84.6%   -0.3%     
=======================================
  Files          7       7             
  Lines        856     859      +3     
  Branches     146     147      +1     
=======================================
  Hits         727     727             
- Misses        77      79      +2     
- Partials      52      53      +1     

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