build(deps-dev): bump ol-layerswitcher from 3.8.3 to 4.1.1 (#201)

Bumps [ol-layerswitcher](https://github.com/walkermatt/ol-layerswitcher) from 3.8.3 to 4.1.1.
- [Changelog](https://github.com/walkermatt/ol-layerswitcher/blob/master/CHANGELOG.md)
- [Commits](walkermatt/ol-layerswitcher@v3.8.3...v4.1.1)

---
updated-dependencies:
- dependency-name: ol-layerswitcher
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

package.json

@@ -77,7 +77,7 @@
     "jsdoc": "^4.0.2",
     "nexe": "^4.0.0-rc.1",
     "ol": "^6.15.1",
-    "ol-layerswitcher": "^3.8.3",
+    "ol-layerswitcher": "^4.1.1",
     "rollup": "^2.79.1",
     "rollup-plugin-executable": "^1.6.3",
     "rollup-plugin-terser": "^7.0.2",