Bump leaflet and @types/leaflet (#87)

Bumps [leaflet](https://github.com/Leaflet/Leaflet) and [@types/leaflet](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/leaflet). These dependencies needed to be updated together.

Updates `leaflet` from 1.9.3 to 1.9.4
- [Release notes](https://github.com/Leaflet/Leaflet/releases)
- [Changelog](https://github.com/Leaflet/Leaflet/blob/main/CHANGELOG.md)
- [Commits](Leaflet/Leaflet@v1.9.3...v1.9.4)

Updates `@types/leaflet` from 1.9.0 to 1.9.6
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/leaflet)

---
updated-dependencies:
- dependency-name: leaflet
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: "@types/leaflet"
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -16,7 +16,7 @@
     "@mui/material": "^5.14.10",
     "@mui/x-date-pickers": "^5.0.8",
     "@next/font": "^13.4.19",
-    "@types/leaflet": "^1.9.0",
+    "@types/leaflet": "^1.9.8",
     "@types/node": "18.11.9",
     "@types/react": "18.2.45",
     "@types/react-dom": "18.2.4",
@@ -29,7 +29,7 @@
     "eslint-config-prettier": "^8.5.0",
     "eslint-plugin-prettier": "^4.2.1",
     "framer-motion": "^8.5.0",
-    "leaflet": "^1.9.3",
+    "leaflet": "^1.9.4",
     "next": "13.5.4",
     "next-i18next": "^12.1.0",
     "next-language-detector": "^1.0.2",