Bump imports-loader from 4.0.1 to 5.0.0 in /mpcontribs-portal

Bumps [imports-loader](https://github.com/webpack-contrib/imports-loader) from 4.0.1 to 5.0.0.
- [Release notes](https://github.com/webpack-contrib/imports-loader/releases)
- [Changelog](https://github.com/webpack-contrib/imports-loader/blob/master/CHANGELOG.md)
- [Commits](webpack-contrib/imports-loader@v4.0.1...v5.0.0)

---
updated-dependencies:
- dependency-name: imports-loader
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

mpcontribs-portal/package.json

@@ -32,7 +32,7 @@
     "css-loader": "^6.8.1",
     "handsontable": "^13.1.0",
     "highlight.js": "^11.9.0",
-    "imports-loader": "^4.0.1",
+    "imports-loader": "^5.0.0",
     "jquery": "^3.7.1",
     "js-sha1": "^0.7.0",
     "lodash": "^4.17.21",