Bump tsup from 8.3.6 to 8.4.0 (#508)

Bumps [tsup](https://github.com/egoist/tsup) from 8.3.6 to 8.4.0.
- [Release notes](https://github.com/egoist/tsup/releases)
- [Commits](egoist/tsup@v8.3.6...v8.4.0)

---
updated-dependencies:
- dependency-name: tsup
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

packages/app/frontend-http-client/package.json

@@ -58,7 +58,7 @@
         "jest-fail-on-console": "^3.1.2",
         "mockttp": "^3.13.0",
         "rimraf": "^6.0.0",
-        "tsup": "8.3.6",
+        "tsup": "8.4.0",
         "typescript": "~5.8.2",
         "vitest": "^3.0.5"
     },