Upgrade leaflet library to latest version 1.7.1

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.2.X, 7.3.X, Master
• Fix Version/s: 7.2.10 DXP FP14, 7.2.10.5 DXP SP5, 7.2.X, 7.3.7 CE GA8, 7.3.10.3 DXP SP3, 7.3.X, 7.4.1 CE GA2, 7.4.13 DXP GA1, 7.4.3.7 CE GA7, 7.4.13 DXP U3, Master
• Component/s: Dynamic Data Mapping
• Labels:
  • backend_test
  • ee-ts
  • liferay-dxp-72-sp5
  • liferay-dxp-73-sp3
  • liferay-fix-pack-dxp-3-7310
  • liferay-fixpack-dxp-14-7210
  • liferay-fixpack-dxp-3-7310
  • liferay-ga3-ce-742
• Branch Version/s:
  7.3.x, 7.2.x
• Backported to Branch:
  Committed
• Fix Priority: 3
• Git Pull Request: https://github.com/liferay-forms/liferay-portal/pull/494
• Bug Type: Accessibility

Description: 
A client ask us to upgrade leaflet library to the latest version 1.7.1 because there are major fixes related to accessibility that he needs.
https://github.com/Leaflet/Leaflet/issues?q=is%3Aopen+is%3Aissue+label%3Aaccessibility

Actual: Leaflet library version is 1.2.0

Expected: Leaflet library version is updated from 1.2.0 to latest 1.7.1