Update dependency leaflet to v1.5.1

[renovate]

This PR contains the following updates:

Package	Type	Update	Change	References
leaflet	dependencies	minor	1.4.0 -> 1.5.1	source

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Release Notes

Leaflet/Leaflet

v1.5.1

Compare Source

• Fix module export regression (#​6647 by cherniavskii)

v1.5.0

Compare Source

API changes

• Add keepAspectRatio option to VideoOverlay (#​6038 by ronikar)
• Add support for keydown and keyup events to map (#​6421 by OrBin)
• Add shadowPane option to Marker (#​6460 by alexfig)
• Add L.SVGOverlay class (#​6517 by Zsavajji)
• Add getIcon method to Marker (#​6457 by OsamaShabrez)

Improvements

• Update attribution link to HTTPS (#​6593 by WillSelway)
• Make DivIcon html option accept Element (#​6571 by oscar-sensornet)
• Microoptimize GeoJSON._setLayerStyle (#​6616 by johnd0e)
• Reuse openPopup and openTooltip code (#​6613 by johnd0e)

Bug fixes

• Fix Control.Layers radio buttons when using multiple maps (#​6483 by jjimenezshaw)
• Explicitly remove controls from the map on map unload (#​6488 by IvanSanchez)
• Fixed a bug where mouseover on Canvas-rendered polylines acted inconsistently (#​6516 by IvanSanchez)
• Prevent tiles highlighting in IE11 (#​6570 by VictorVelarde)
• Fix L.Util.formatNum rounding precision (#​6587 by inkstak)
• Fix crash, when setting opacity on Marker without icon (#​6610 by charlie67)
• Make synthetic dblclick event relate to left mouse button (#​6628 by IvanSanchez)

Docs & Web Site

• Minor spelling corrections in Docs/Tutorials (#​6464 by ilyankou)
• Document toGeoJSON's precision argument (#​6375 by rkatka)
• Add background color CSS declaration (#​6614 by milesflo)
• Clarify Events.off method docs (#​6619 by lancebendo)
• Fix Layer example (#​6636 by billygarrison)

Development workflow

• Update dev dependencies & remove coverage scripts (#​6635 by mourner)

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