Bump sass-loader from 14.2.1 to 15.0.0 in /{{cookiecutter.project_slug}}

Bumps [sass-loader](https://github.com/webpack-contrib/sass-loader) from 14.2.1 to 15.0.0.
- [Release notes](https://github.com/webpack-contrib/sass-loader/releases)
- [Changelog](https://github.com/webpack-contrib/sass-loader/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webpack-contrib/sass-loader/compare/v14.2.1...v15.0.0)

---
updated-dependencies:
- dependency-name: sass-loader
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

{{cookiecutter.project_slug}}/package.json

@@ -27,7 +27,7 @@
     "postcss-loader": "^8.0.0",
     "postcss-preset-env": "^9.0.0",
     "sass": "^1.43.4",
-    "sass-loader": "^14.0.0",
+    "sass-loader": "^15.0.0",
     "webpack": "^5.65.0",
     "webpack-bundle-tracker": "^3.0.1",
     "webpack-cli": "^5.0.1",