Bump next-themes from 0.2.1 to 0.3.0 in /frontend

Bumps [next-themes](https://github.com/pacocoursey/next-themes) from 0.2.1 to 0.3.0.
- [Release notes](https://github.com/pacocoursey/next-themes/releases)
- [Commits](https://github.com/pacocoursey/next-themes/commits/v0.3.0)

---
updated-dependencies:
- dependency-name: next-themes
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

frontend/package-lock.json

@@ -33,7 +33,7 @@
     "framer-motion": "^11.0.24",
     "intl-messageformat": "^10.5.0",
     "next": "14.1.4",
-    "next-themes": "^0.2.1",
+    "next-themes": "^0.3.0",
     "postcss": "8.4.38",
     "react": "18.2.0",
     "react-dom": "18.2.0",