Bump jekyll-plugin from 1.6.20 to 1.6.21

[dependabot[bot]]

Bumps jekyll-plugin from 1.6.20 to 1.6.21.

Release notes

Sourced from jekyll-plugin's releases.

1.6.21 Beta

This is a bugfix release that mostly enables building documentation for multiplatform projects that utilize .klib libraries.

Changes

• Support Kotlin 1.6.21
• Update jsoup dependency to avoid CVE-2021-37714 (#2448)

Bugfixes

• Support KLIB libraries for common platform, previously led to ERROR CLASS instead of references in documentation (#2441)
• Fixed a maven plugin build problem related to coroutines which only occurred in multi-module builds (#2461)

Commits

• b69a7d4 Update documentation and examples to Dokka 1.6.21 (#2465)
• 981ca7f Set finalizeCoroutines to false for maven runner (#2461)
• a7d7e07 Update Dokka version to 1.6.21
• a8c1a64 Update Kotlin to 1.6.21 (#2454)
• 68eaffc Update Jsoup to 1.14.3 (#2448)
• e0cc2ad Support KLIB for Common platform (#2441)
• d868eab Use common gradle+kotlin versions across gradle integration tests (#2287)
• See full diff in compare view

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[dependabot[bot]]

Looks like org.jetbrains.dokka:jekyll-plugin is up-to-date now, so this is no longer needed.