Bump react-intl from 7.1.14 to 8.1.1 in /frontend

Bumps [react-intl](https://github.com/formatjs/formatjs) from 7.1.14 to 8.1.1.
- [Release notes](https://github.com/formatjs/formatjs/releases)
- [Commits](https://github.com/formatjs/formatjs/compare/react-intl@7.1.14...react-intl@8.1.1)

---
updated-dependencies:
- dependency-name: react-intl
  dependency-version: 8.1.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

frontend/package.json

@@ -32,7 +32,7 @@
 		"react": "^19.2.4",
 		"react-bootstrap": "^2.10.10",
 		"react-dom": "^19.2.4",
-		"react-intl": "^7.1.14",
+		"react-intl": "^8.1.1",
 		"react-markdown": "^10.1.0",
 		"react-router-dom": "^7.13.0",
 		"react-select": "^5.10.2",