tools: dump config.gypi as json

[legendecas]

This helps js2c processing the node.gypi correctly when a string contains a quote.

Refs: #60703

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.55%. Comparing base (0b6ae6d) to head (52dd9e8).
⚠️ Report is 21 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #60794      +/-   ##
==========================================
+ Coverage   88.04%   88.55%   +0.51%     
==========================================
  Files         703      703              
  Lines      208260   208249      -11     
  Branches    40068    40153      +85     
==========================================
+ Hits       183360   184417    +1057     
+ Misses      16840    15838    -1002     
+ Partials     8060     7994      -66     

see 100 files with indirect coverage changes

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[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/70263/

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/70269/

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/70274/

[nodejs-github-bot]

Landed in 7fd3688