test: exclude drivers and scripts directories from test coverage

[cjpearson]

The compiled drivers directory was being considered for test coverage. This change excludes that directory along with the scripts directory to have a more accurate coverage report.

Before

After

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 59.77%. Comparing base (4d61c78) to head (022a7fe).
Report is 158 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #562      +/-   ##
==========================================
- Coverage   65.05%   59.77%   -5.29%     
==========================================
  Files          39       42       +3     
  Lines        4055     3627     -428     
  Branches      487      587     +100     
==========================================
- Hits         2638     2168     -470     
- Misses       1408     1456      +48     
+ Partials        9        3       -6     

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[pi0]

Thanks.