build(deps): bump json from 2.19.9 to 2.20.0

[dependabot]

Bumps json from 2.19.9 to 2.20.0.

Changelog

Sourced from json's changelog.

2026-06-23 (2.20.0)

• Both C and Java parsers are no longer recursive, so parsing very deep documents with max_nesting: false will no longer result in SystemStackError stack level too deep errors.
  • The :max_nesting option still defaults to 100.
• Optimized floating point number parsing further by replacing the ryu algorithm by a port of Eisel-Lemire Fast Float.
• Added JSON::ResumableParser to parse streams of JSON documents. Not yet available on JRuby.
• Deprecate default support of JavaScript comments in the parser and add allow_comments: true parsing option.
• Integrate with Ruby 4.1 ruby_sized_xfree.

Commits

• 1316292 Release 2.20.0
• 1443265 Remove useless executable bits
• 532065c Preserve UTF-8 encoding when reallocating a frozen ResumableParser buffer
• 7c8af4b Update extconf.rb guard to use RUBY_ENGINE_VERSION
• 2afd1a9 Cleanup the rb_catch_obj workaround
• 9892514 Simplify parser_config_init
• b30a8f8 ResumableParser: eagerly drop the buffer when reaching EOS
• f08c663 ResumableParser: accept only keyword arguments
• 9d8efcb Workaround TruffleRuby buggy rb_catch_obj implementation
• 4bd1e9b ResumableParser: use throw rather than raise for handled EOS
• Additional commits viewable in compare view

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