Bump sass-loader from 16.0.1 to 16.0.4 in /services/idp

Bumps [sass-loader](https://github.com/webpack-contrib/sass-loader) from 16.0.1 to 16.0.4.
- [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/v16.0.1...v16.0.4)

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

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

services/idp/package.json

@@ -146,7 +146,7 @@
     "react-dev-utils": "^12.0.1",
     "resolve": "1.22.8",
     "resolve-url-loader": "^5.0.0",
-    "sass-loader": "^16.0.1",
+    "sass-loader": "^16.0.4",
     "source-map-explorer": "^2.5.3",
     "typescript": "^4.9.5",
     "url-loader": "4.1.1",