build(deps-dev): bump openapi-typescript from 7.8.0 to 7.9.1 (#3417)

Bumps [openapi-typescript](https://github.com/openapi-ts/openapi-typescript/tree/HEAD/packages/openapi-typescript) from 7.8.0 to 7.9.1.
- [Release notes](https://github.com/openapi-ts/openapi-typescript/releases)
- [Changelog](https://github.com/openapi-ts/openapi-typescript/blob/main/packages/openapi-typescript/CHANGELOG.md)
- [Commits](https://github.com/openapi-ts/openapi-typescript/commits/[email protected]/packages/openapi-typescript)

---
updated-dependencies:
- dependency-name: openapi-typescript
  dependency-version: 7.9.1
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

packages/backend/package.json

@@ -140,7 +140,7 @@
     "@types/supertest": "^6.0.3",
     "@types/swagger-ui-dist": "^3.30.5",
     "@types/swagger-ui-express": "^4.1.8",
-    "openapi-typescript": "^7.8.0",
+    "openapi-typescript": "^7.9.1",
     "supertest": "^7.1.4",
     "vitest": "^3.0.5"
   }