return an error code when an mqtt5 puback has a failing reason code

[sbSteveK]

• mqtt3 should have a non-successful error_code when a failed reason code puback is received using the mqtt5 to mqtt3 adapter.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 80.00000% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 82.57%. Comparing base (d4346e0) to head (a417561).

Files	Patch %	Lines
source/v5/mqtt5_to_mqtt3_adapter.c	80.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #352      +/-   ##
==========================================
+ Coverage   82.55%   82.57%   +0.01%     
==========================================
  Files          20       20              
  Lines        8764     8767       +3     
==========================================
+ Hits         7235     7239       +4     
+ Misses       1529     1528       -1     

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[bretambrose]

Add test and ship it