Fix for nothings in VOM table data parser

[rodrigomha]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 75.00000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 84.30%. Comparing base (6e8e2f2) to head (effc91c).
Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
src/parsers/power_system_table_data.jl	75.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1236      +/-   ##
==========================================
- Coverage   84.31%   84.30%   -0.02%     
==========================================
  Files         181      181              
  Lines        8399     8409      +10     
==========================================
+ Hits         7082     7089       +7     
- Misses       1317     1320       +3     

Flag	Coverage Δ
unittests	84.30% <75.00%> (-0.02%)	⬇️

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Files with missing lines	Coverage Δ
src/parsers/power_system_table_data.jl	81.89% <75.00%> (-0.18%)	⬇️