Bump postcss-less from 6.0.0 to 7.0.1

Bumps [postcss-less](https://github.com/prettier/postcss-less) from 6.0.0 to 7.0.1.
- [Release notes](https://github.com/prettier/postcss-less/releases)
- [Commits](https://github.com/prettier/postcss-less/compare/v6.0.0...v7.0.1)

---
updated-dependencies:
- dependency-name: postcss-less
  dependency-version: 7.0.1
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

package.json

@@ -155,7 +155,7 @@
     "jest-expect-message": "^1.1.3",
     "jsdom": "^30.1.3",
     "jsdom-global": "^3.0.2",
-    "postcss-less": "^6.0.0",
+    "postcss-less": "^7.0.1",
     "stylelint": "^17.16.0",
     "stylelint-config-recess-order": "^7.9.0",
     "stylelint-config-recommended": "^18.0.0",