refactor: minimum supported Node.js version is 20.9.0

[alexander-akait]

Summary

update minimum supported nodejs version and bump serialize-javascript

What kind of change does this PR introduce?

refactor

Did you add tests for your changes?

Existing

Does this PR introduce a breaking change?

Yes

If relevant, what needs to be documented once your changes are merged or what have you already documented?

Nothing

Use of AI

No

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.13%. Comparing base (1e372bc) to head (aa5842f).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #161   +/-   ##
=======================================
  Coverage   96.13%   96.13%           
=======================================
  Files           3        3           
  Lines         207      207           
  Branches       65       65           
=======================================
  Hits          199      199           
  Misses          7        7           
  Partials        1        1           

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