Bump @types/leaflet from 1.9.8 to 1.9.12 (#1436)

Bumps [@types/leaflet](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/leaflet) from 1.9.8 to 1.9.12.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/leaflet)

---
updated-dependencies:
- dependency-name: "@types/leaflet"
  dependency-type: direct:development
  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

@@ -12,7 +12,7 @@
         "@popperjs/core": "^2.11.8",
         "@symfony/stimulus-bridge": "^3.2.2",
         "@symfony/webpack-encore": "^4.6.1",
-        "@types/leaflet": "^1.9.8",
+        "@types/leaflet": "^1.9.12",
         "@types/react-dom": "^18.3.0",
         "@typescript-eslint/eslint-plugin": "^8.5.0",
         "@typescript-eslint/parser": "^8.5.0",