Update json requirement from 2.21.1 to 2.21.2

[dependabot]

Updates the requirements on json to permit the latest version.

Release notes

Sourced from json's releases.

v2.21.2

What's Changed

• Fix a use-after-free bug in JSON::ResumableParser. [GHSA-9hj4-r449-hfvc].

Full Changelog: ruby/json@v2.21.1...v2.21.2

Changelog

Sourced from json's changelog.

2026-07-31 (2.21.2)

• Fix a use-after-free bug in JSON::ResumableParser. [GHSA-9hj4-r449-hfvc].

2026-07-13 (2.21.1)

• Fix a compilation issue on Window and Microsoft Visual C++.

2026-07-12 (2.21.0)

• JSON.generate now accept a sort_keys option, which takes either a boolean or a block.
• Added #empty? and #partial_value? methods on JSON::ResumableParser.
• Numerous correctness and performance fixes for JSON::ResumableParser.
• Avoid triggering Ruby's float out of range warning when parsing out of range numbers.
• Declare C types with Ruby 4.1 RUBY_TYPED_THREAD_SAFE_FREE.

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.

2026-06-11 (2.19.9)

• Fix buffer overflow that could lead to a crash when writing JSON directly into an IO with JSON.generate(object, io). [CVE-2026-54696].

2026-06-03 (2.19.8)

• Fix 1-byte buffer overread on EOS errors.
• Handle invalid types passed as max_nesting option.

2026-05-28 (2.19.7)

• Fix some more edge cases with out of range floats.
• Ensure the string provided to JSON.parse can't be mutated during parsing.
• Add missing write barriers in State#dup.
• Further validate generator depth config.

2026-05-28 (2.19.6)

• Cleanly handle overly large depth generator argument.
• Add missing write barrier in ParserConfig.

2026-05-04 (2.19.5)

... (truncated)

Commits

• 5a32e43 Release 2.21.2
• 2c332bf Also don't compute ResumableParser cursor position for warning
• 5499aa5 Improve max_nesting documentation
• 499d9bc Fix the parser benchmark bytes report
• f5fc245 Pass '-mno-outline' to the compiler (if supported) to prevent function outlin...
• See full diff in compare view

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