chore(deps): update shiki monorepo to v1.21.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@shikijs/transformers (source)	1.19.0 -> 1.21.0
shiki (source)	1.19.0 -> 1.21.0

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Release Notes

shikijs/shiki (@​shikijs/transformers)

v1.21.0

Compare Source

   🚀 Features

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

   🐞 Bug Fixes

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

    View changes on GitHub

v1.20.0

Compare Source

   🚀 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 https://github.com/shikijs/shiki/issues/787 (c449d)

   🐞 Bug Fixes

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

    View changes on GitHub

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