build(deps): bump celery from 5.3.6 to 5.4.0 in /application

Bumps [celery](https://github.com/celery/celery) from 5.3.6 to 5.4.0.
- [Release notes](https://github.com/celery/celery/releases)
- [Changelog](https://github.com/celery/celery/blob/main/Changelog.rst)
- [Commits](celery/celery@v5.3.6...v5.4.0)

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

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

application/requirements.txt

@@ -1,7 +1,7 @@
 anthropic==0.40.0
 boto3==1.34.153
 beautifulsoup4==4.12.3
-celery==5.3.6
+celery==5.4.0
 dataclasses-json==0.6.7
 docx2txt==0.8
 duckduckgo-search==6.3.0