chore(deps): bump flexsearch from 0.7.43 to 0.8.158

Bumps [flexsearch](https://github.com/nextapps-de/flexsearch) from 0.7.43 to 0.8.158.
- [Release notes](https://github.com/nextapps-de/flexsearch/releases)
- [Changelog](https://github.com/nextapps-de/flexsearch/blob/master/CHANGELOG.md)
- [Commits](https://github.com/nextapps-de/flexsearch/commits)

---
updated-dependencies:
- dependency-name: flexsearch
  dependency-version: 0.8.158
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

apps/portal/package.json

@@ -32,7 +32,7 @@
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
     "date-fns": "4.1.0",
-    "flexsearch": "^0.7.43",
+    "flexsearch": "^0.8.158",
     "github-slugger": "^2.0.0",
     "he": "^1.2.0",
     "lucide-react": "0.503.0",