Upgrade Leaflet and Friends

[rajadain]

Overview

Upgrade Leaflet to the latest version, to get rid of this warning:

iow-boundary-tool-app-1       | Compiled with warnings.
iow-boundary-tool-app-1       |
iow-boundary-tool-app-1       | Warning
iow-boundary-tool-app-1       | (655:3) autoprefixer: Replace color-adjust to print-color-adjust. The color-adjust shorthand is currently deprecated.
iow-boundary-tool-app-1       |
iow-boundary-tool-app-1       | Search for the keywords to learn more about each warning.
iow-boundary-tool-app-1       | To ignore, add // eslint-disable-next-line to the line before.
iow-boundary-tool-app-1       |
iow-boundary-tool-app-1       | WARNING in ./node_modules/leaflet/dist/leaflet.css (./node_modules/css-loader/dist/cjs.js??ruleSet[1].rules[2].oneOf[5].use[1]!./node_modules/postcss-loader/dist/cjs.js??ruleSet[1].rules[2].oneOf[5].use[2]!./node_modules/source-map-loader/dist/cjs.js!./node_modules/leaflet/dist/leaflet.css)
iow-boundary-tool-app-1       | Module Warning (from ./node_modules/postcss-loader/dist/cjs.js):
iow-boundary-tool-app-1       | Warning
iow-boundary-tool-app-1       |
iow-boundary-tool-app-1       | (655:3) autoprefixer: Replace color-adjust to print-color-adjust. The color-adjust shorthand is currently deprecated.
iow-boundary-tool-app-1       |
iow-boundary-tool-app-1       | webpack compiled with 1 warning

This was fixed in 1.9.0: https://github.com/Leaflet/Leaflet/blob/8a467ab39db7d44ff30db2656da4044bb626337a/CHANGELOG.md#190-2022-09-21

Also upgrade Leaflet.DistortableImage so it includes this fix: publiclab/Leaflet.DistortableImage#1014, and drop the manual fix https://github.com/azavea/iow-boundary-tool/blob/develop/src/app/src/components/Layers/L.DistortableImage.Edit.fix.js