fix: upgrade sass from 1.67.0 to 1.68.0 (#34)

Snyk has created this PR to upgrade sass from 1.67.0 to 1.68.0.

See this package in npm:
https://www.npmjs.com/package/sass

See this project in Snyk:
https://app.snyk.io/org/uptudev/project/aea29198-62cd-44ba-ba53-d378ad540c7b?utm_source=github&utm_medium=referral&page=upgrade-pr

Co-authored-by: snyk-bot <snyk-bot@snyk.io>

package.json

@@ -20,7 +20,7 @@
     "react-scripts": "5.0.1",
     "react-syntax-highlighter": "^15.5.0",
     "react-transition-group": "^4.4.5",
-    "sass": "^1.67.0",
+    "sass": "^1.68.0",
     "typescript": "^4.9.5",
     "web-vitals": "^2.1.4"
   },