Update CHANGELOG for 0.68.1

[dcg-generated-docs]

Updates CHANGELOG.md for 0.68.1.

This PR was created automatically after publishing release a241d42.

[github-actions]

📚 Docs Preview: https://pr-3594.datamodel-code-generator.pages.dev

[codspeed-hq]

Merging this PR will degrade performance by 12.39%

⚠️ Unknown Walltime execution environment detected

Using the Walltime instrument on standard Hosted Runners will lead to inconsistent data.

For the most accurate results, we recommend using CodSpeed Macro Runners: bare-metal machines fine-tuned for performance measurement consistency.

❌ 13 regressed benchmarks
⏩ 98 skipped benchmarks¹

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
❌	WallTime	test_perf_large_models_pydantic_v2_builtin	872.4 ms	1,038.9 ms	-16.02%
❌	WallTime	test_perf_large_models_pydantic_v2_noformat	825.1 ms	978.7 ms	-15.7%
❌	WallTime	test_perf_aws_style_openapi_pydantic_v2	1.8 s	2.1 s	-14.51%
❌	WallTime	test_perf_openapi_large	2.8 s	3.3 s	-12.98%
❌	WallTime	test_perf_graphql_style_pydantic_v2	742.9 ms	850.5 ms	-12.65%
❌	WallTime	test_perf_complex_refs	1.9 s	2.1 s	-11.6%
❌	WallTime	test_perf_large_models_pydantic_v2	3.4 s	3.8 s	-11.56%
❌	WallTime	test_perf_kubernetes_style_pydantic_v2	2.5 s	2.8 s	-11.5%
❌	WallTime	test_perf_all_options_enabled	5.1 s	5.8 s	-11.2%
❌	WallTime	test_perf_stripe_style_pydantic_v2	1.9 s	2.1 s	-11.01%
❌	WallTime	test_perf_duplicate_names	988.2 ms	1,108.7 ms	-10.87%
❌	WallTime	test_perf_multiple_files_input	3.3 s	3.7 s	-10.86%
❌	WallTime	test_perf_deep_nested	4.9 s	5.5 s	-10.35%

Tip

Investigate this regression by commenting @codspeedbot fix this regression on this PR, or directly use the CodSpeed MCP with your agent.

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_{Comparing docs/changelog-0.68.1 (51c2a65) with main (a241d42)}

Footnotes

1. 98 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (a241d42) to head (51c2a65).

Additional details and impacted files

@@            Coverage Diff            @@
##              main     #3594   +/-   ##
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  Coverage   100.00%   100.00%           
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  Files          164       164           
  Lines        35325     35325           
  Branches      4078      4078           
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  Hits         35325     35325           

Flag	Coverage Δ
unittests	100.00% <ø> (ø)

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[github-actions]

Breaking Change Analysis

Result: No breaking changes detected

Reasoning: The prepared diff touches only CHANGELOG.md, adding the auto-generated release notes for version 0.68.1. There are no changes to generated code output, Jinja2 templates, CLI options, the Python API, default values/behavior, supported Python versions, or error handling. The deleted-lines file is empty, so nothing was removed. This is a documentation-only change and therefore contains no breaking changes.

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This analysis was performed by Claude Code Action