i18n(ko-KR): update multiple pages

[jsparkdev]

Description (required)

• docs: clarify Astro.url and Astro.params runtime behavior #13903
• docs: bump 'actions/checkout' to latest released version 7 #14128
• Cloudflare Workers Cache is no longer private beta #14198
• Translate untranslated code blocks in the api-refenrece page into Korean.

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[astrobot-houston]

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Tracked Files

File	Note
ko/guides/caching.mdx	Localization changed, will be marked as complete.
ko/guides/deploy/aws.mdx	Localization changed, will be marked as complete.
ko/guides/deploy/deno.mdx	Localization changed, will be marked as complete.
ko/guides/deploy/github.mdx	Localization changed, will be marked as complete.
ko/guides/upgrade-to/v6.mdx	Localization changed, will be marked as complete.
ko/reference/api-reference.mdx	Localization changed, will be marked as complete.

Warnings reference

Icon	Description
🔄️	The source for this localization has been updated since the creation of this pull request, make sure all changes in the source have been applied.

[jsparkdev]

This string is intentionally left untranslated.

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[ArmandPhilippot]

Thanks, LGTM!