Fixed sketch profile parser crashing in some cases.

[cmaglie]

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• Tests for the changes have been added (for bug fixes / features)
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• configuration.schema.json updated if new parameters are added.

What kind of change does this PR introduce?

Fix the bug reported in #3081.

What is the current behavior?

Arduino CLI crashes.

What is the new behavior?

Arduino CLI completes the command successfully.

Does this PR introduce a breaking change, and is titled accordingly?

No

Other information

Fix #3081.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 69.53%. Comparing base (aa11438) to head (cb74636).
⚠️ Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3087      +/-   ##
==========================================
+ Coverage   69.52%   69.53%   +0.01%     
==========================================
  Files         253      253              
  Lines       19173    19175       +2     
==========================================
+ Hits        13330    13334       +4     
+ Misses       4614     4611       -3     
- Partials     1229     1230       +1     

Flag	Coverage Δ
unit	69.53% <100.00%> (+0.01%)	⬆️

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