Fix attribute updates with original data

[LucasG0]

Fixes #349

Corresponding infrahub pipeline: opsmill/infrahub#6266

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Codecov Report

Attention: Patch coverage is 92.85714% with 1 line in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
infrahub_sdk/node.py	92.85%	0 Missing and 1 partial ⚠️

@@            Coverage Diff             @@
##           stable     #351      +/-   ##
==========================================
+ Coverage   72.44%   72.46%   +0.02%     
==========================================
  Files          91       91              
  Lines        8169     8179      +10     
  Branches     1572     1576       +4     
==========================================
+ Hits         5918     5927       +9     
  Misses       1840     1840              
- Partials      411      412       +1     

Flag	Coverage Δ
integration-tests	22.33% <64.28%> (+0.05%)	⬆️
python-3.10	46.54% <57.14%> (-0.01%)	⬇️
python-3.11	46.52% <57.14%> (-0.04%)	⬇️
python-3.12	?
python-3.13	46.54% <57.14%> (-0.01%)	⬇️
python-3.9	44.89% <57.14%> (-0.01%)	⬇️
python-filler-3.12	25.10% <28.57%> (+0.01%)	⬆️

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Files with missing lines	Coverage Δ
infrahub_sdk/node.py	77.38% <92.85%> (+0.11%)	⬆️

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[ogenstad]

LGTM

A potential future consideration would be if we should update the same field if we call save additional times. But it should only be a very corner case optimisation. And even then it could very well be that the attribute has been updated on the server already and we want to overwrite it if it differs.