chore(deps): bump less-loader from 12.3.0 to 12.3.1 in /web

Bumps [less-loader](https://github.com/webpack/less-loader) from 12.3.0 to 12.3.1.
- [Release notes](https://github.com/webpack/less-loader/releases)
- [Changelog](https://github.com/webpack/less-loader/blob/main/CHANGELOG.md)
- [Commits](https://github.com/webpack/less-loader/compare/v12.3.0...v12.3.1)

---
updated-dependencies:
- dependency-name: less-loader
  dependency-version: 12.3.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

web/package.json

@@ -18,7 +18,7 @@
     "eslint-plugin-prettier": "^5.5.5",
     "http-proxy-middleware": "^3.0.5",
     "less": "^4.5.1",
-    "less-loader": "^12.3.0",
+    "less-loader": "^12.3.1",
     "prettier": "^3.3.2",
     "react": "^19.2.4",
     "react-app-rewired": "^2.1.11",