cte: Close file object in f29.parse_datos_obj

[jtrobles-cdd]

Fix the following warning:

cl_sii/cte/f29/parse_datos_obj.py:31:
ResourceWarning: unclosed file
<_io.TextIOWrapper name='cl_sii/data/cte/f29_datos_obj_missing_key_fixes.json' mode='r' encoding='UTF-8'>
CTE_F29_DATOS_OBJ_MISSING_KEY_FIXES: SiiCteF29DatosObjType = json.load(

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.45%. Comparing base (665346c) to head (e6a312f).
Report is 2 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #697   +/-   ##
========================================
  Coverage    87.45%   87.45%           
========================================
  Files           38       38           
  Lines         3092     3093    +1     
  Branches       381      382    +1     
========================================
+ Hits          2704     2705    +1     
  Misses         246      246           
  Partials       142      142           

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