meta: bump shiki from 1.18.0 to 1.21.0

[dependabot[bot]]

Bumps shiki from 1.18.0 to 1.21.0.

Release notes

Sourced from shiki's releases.

v1.21.0

   🚀 Features

• perf:
  • Lazy embed languages bundle for SFCs and Docs  -  by @​antfu in shikijs/shiki#791 (c8acc)
  • Skip bundling for assets  -  by @​antfu in shikijs/shiki#795 (0c5a5)

   🐞 Bug Fixes

• Avoid using deprecated APIs in core  -  by @​antfu (cd184)

    View changes on GitHub

v1.20.0

   🚀 Features

• Rename createWasmOnigEngine to createOnigurumaEngine  -  by @​antfu (2335d)
• Move createCssVariablesTheme to core  -  by @​antfu (989af)
• rehype: Support lazy load languages  -  by @​fuma-nama and @​antfu in shikijs/shiki#787 (c449d)

   🐞 Bug Fixes

• Improve deprecation warnings  -  by @​antfu (50c8e)

    View changes on GitHub

v1.19.0

   🚀 Features

• Introduce warning system for deprecated API  -  by @​antfu in shikijs/shiki#788 (4e59b)
• core:
  • Pass raw token to transformer.span api  -  by @​zzuu666 in shikijs/shiki#782 (bba45)
  • Support object style htmlStyle in themed token, support new htmlAttrs  -  by @​antfu (85a4f)

    View changes on GitHub

Commits

• d38f41e chore: release v1.21.0
• d6f4784 docs: update grammar report
• 0c5a51a feat(perf): skip bundling for assets (#795)
• c8accc9 feat(perf): lazy embed languages bundle for SFCs and Docs (#791)
• cd18449 fix: avoid using deprecated APIs in core
• 6aa7e08 chore: release v1.20.0
• d5ec824 chore: update deps
• 989afdb feat: move createCssVariablesTheme to core
• 50c8e4a fix: improve deprecation warnings
• 2335dda feat: rename createWasmOnigEngine to createOnigurumaEngine
• Additional commits viewable in compare view

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