build: release 2.15.0

[alistair3149]

:robot: I have created a release beep boop

2.15.0 (2024-05-27)

Features

• ✨ improve scrolling performance (27bca0f)
• TabberNeue: ✨ add init styles (45ee5f8)
• TabberNeue: ✨ update Tabber styles (be01d5b)

Bug Fixes

• core: 🐛 escape double quotes for toc selector (ae6d207)
• core: 🐛 incorrect sticky header class assignment (af3d72a)

Performance Improvements

• core: ⚡️ further improvements to scroll and section observers (e9289b1)

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