Fix error reponse of ms defender connector

[mdazam1942]

No description provided.

[codecov]

Codecov Report

Merging #747 (9b9a8b6) into develop (4a6c3a9) will increase coverage by 0.03%.
The diff coverage is 76.47%.

@@             Coverage Diff             @@
##           develop     #747      +/-   ##
===========================================
+ Coverage    63.30%   63.34%   +0.03%     
===========================================
  Files          425      425              
  Lines        36834    36854      +20     
===========================================
+ Hits         23318    23345      +27     
+ Misses       13516    13509       -7     

Impacted Files	Coverage Δ
...ifter_modules/msatp/stix_transmission/connector.py	62.93% <52.94%> (+6.79%)	⬆️
...odules/msatp/tests/stix_transmission/test_msatp.py	89.43% <100.00%> (+1.53%)	⬆️

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