build(deps-dev): bump postcss-load-config from 5.0.3 to 6.0.1

Bumps [postcss-load-config](https://github.com/postcss/postcss-load-config) from 5.0.3 to 6.0.1.
- [Release notes](https://github.com/postcss/postcss-load-config/releases)
- [Changelog](https://github.com/postcss/postcss-load-config/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss-load-config@v5.0.3...6.0.1)

---
updated-dependencies:
- dependency-name: postcss-load-config
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -108,7 +108,7 @@
     "postcss-color-function": "4.1.0",
     "postcss-custom-properties": "13.3.6",
     "postcss-jsx": "0.36.4",
-    "postcss-load-config": "5.0.3",
+    "postcss-load-config": "6.0.1",
     "postcss-syntax": "0.36.2",
     "postcss-url": "10.1.3",
     "postcss-values-parser": "6.0.2",