Update dependency @react-leaflet/core to v3

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
@react-leaflet/core (source)	2.1.0 → 3.0.0

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Release Notes

PaulLeCam/react-leaflet (@​react-leaflet/core)

v3.0.0

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v3 is a full rewrite of React Leaflet and contains breaking change from v2.

• Full rewrite based on React Hooks (no more extending Component)
• Replace Flow by TypeScript for type checking
• Drop IE support (Babel config will only target the "last 2 versions" of modern browsers)
• Switch to the Hippocratic License
• The Map component is replaced by MapContainer, behaving differently
• Event handlers must be attached using the eventHandlers prop rather than on* props, with a similar change for path options and WMS params
• The react-leaflet package only exposes a public API while a new package, @react-leaflet/core, is used to provide the core APIs
• A new documentation website using Docusaurus v2 with live examples

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