Bump @babel/preset-env from 7.29.7 to 8.0.2 in /mpcontribs-portal

Bumps [@babel/preset-env](https://github.com/babel/babel/tree/HEAD/packages/babel-preset-env) from 7.29.7 to 8.0.2.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/main/CHANGELOG.md)
- [Commits](https://github.com/babel/babel/commits/v8.0.2/packages/babel-preset-env)

---
updated-dependencies:
- dependency-name: "@babel/preset-env"
  dependency-version: 8.0.2
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

mpcontribs-portal/package.json

@@ -18,7 +18,7 @@
   },
   "dependencies": {
     "@babel/core": "^7.23.2",
-    "@babel/preset-env": "^7.23.2",
+    "@babel/preset-env": "^8.0.2",
     "@fortawesome/fontawesome-free": "^7.3.0",
     "@vizuaalog/bulmajs": "^0.12.2",
     "babel-loader": "^10.1.1",