chore(main): release 2.2.0

[github-actions[bot]]

:robot: I have created a release beep boop

2.2.0 (2024-07-14)

🚀 Features

• properly raise error on missing toc end (22d5bed)

🐛 Bug Fixes

• properly handle duplicates above the TOC placeholder (fb6b9c5)
• update to Kotlin Multiplatform 2.0.0 (f624c62)

🦀 Build and CI

• upload maven package to GitHub Packages (4d8ea40)

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[github-actions[bot]]

:robot: Release is at https://github.com/derlin/bitdowntoc/releases/tag/v2.2.0 :sunflower: