Bump slick-carousel from 1.6.0 to 1.8.1

Bumps [slick-carousel](https://github.com/kenwheeler/slick) from 1.6.0 to 1.8.1.
- [Release notes](https://github.com/kenwheeler/slick/releases)
- [Commits](kenwheeler/slick@1.6.0...v1.8.1)

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -53,7 +53,7 @@
     "quagga": "0.12.1",
     "regenerator-runtime": "0.13.7",
     "sinon": "10.0.1",
-    "slick-carousel": "1.6.0",
+    "slick-carousel": "1.8.1",
     "style-loader": "2.0.0",
     "stylelint": "13.13.1",
     "stylelint-declaration-use-variable": "1.7.2",