Bump find-unused-sass-variables from 1.0.5 to 2.0.0 (twbs#30672)

Bumps [find-unused-sass-variables](https://github.com/XhmikosR/find-unused-sass-variables) from 1.0.5 to 2.0.0.
- [Release notes](https://github.com/XhmikosR/find-unused-sass-variables/releases)
- [Commits](XhmikosR/find-unused-sass-variables@v1.0.5...v2.0.0)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

package.json

@@ -104,7 +104,7 @@
     "eslint-config-xo": "^0.29.1",
     "eslint-plugin-import": "^2.20.2",
     "eslint-plugin-unicorn": "^19.0.1",
-    "find-unused-sass-variables": "^1.0.5",
+    "find-unused-sass-variables": "^2.0.0",
     "glob": "^7.1.6",
     "hammer-simulator": "0.0.1",
     "hugo-bin": "^0.57.2",