Change JSONIFY_PRETTYPRINT_REGULAR flask property to false [Dev]

[canattofilipe]

• Please check if the PR fulfills these requirements

• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

• What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)
  Improvement

• What is the current behavior? (You can also link to an open issue here)
  The result is formatted

• What is the new behavior (if this is a feature change)?
  The result isn't formatted

• Does this PR introduce a breaking change? (What changes might users need to make in their application due to this PR?)
  It doesn't

• Is there any issue related to this PR in other repository? (such as dojot/dojot)
  No

• Other information:

Issue: dojot/dojot#1718

[codecov]

Codecov Report

Merging #166 into development will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@               Coverage Diff               @@
##           development     #166      +/-   ##
===============================================
+ Coverage        73.62%   73.64%   +0.01%     
===============================================
  Files               17       17              
  Lines             1710     1711       +1     
===============================================
+ Hits              1259     1260       +1     
  Misses             451      451              

Impacted Files	Coverage Δ
DeviceManager/app.py	100.00% <100.00%> (ø)

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[thiagodpf]

👍