Bump scss-tokenizer and node-sass in /BlueMapCommon/webapp

Bumps [scss-tokenizer](https://github.com/sasstools/scss-tokenizer) to 0.4.3 and updates ancestor dependency [node-sass](https://github.com/sass/node-sass). These dependencies need to be updated together.


Updates `scss-tokenizer` from 0.2.3 to 0.4.3
- [Release notes](https://github.com/sasstools/scss-tokenizer/releases)
- [Commits](https://github.com/sasstools/scss-tokenizer/compare/v0.2.3...v0.4.3)

Updates `node-sass` from 6.0.1 to 8.0.0
- [Release notes](https://github.com/sass/node-sass/releases)
- [Changelog](https://github.com/sass/node-sass/blob/master/CHANGELOG.md)
- [Commits](https://github.com/sass/node-sass/compare/v6.0.1...v8.0.0)

---
updated-dependencies:
- dependency-name: scss-tokenizer
  dependency-type: indirect
- dependency-name: node-sass
  dependency-type: direct:development
...

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

BlueMapCommon/webapp/package.json

@@ -35,7 +35,7 @@
     "babel-eslint": "^10.1.0",
     "eslint": "^6.7.2",
     "eslint-plugin-vue": "^6.2.2",
-    "node-sass": "^6.0.0",
+    "node-sass": "^8.0.0",
     "sass-loader": "^10.1.1",
     "vue-template-compiler": "^2.6.11"
   },