Bump celery from 5.2.2 to 5.2.3 (#507)

Bumps [celery](https://github.com/celery/celery) from 5.2.2 to 5.2.3.
- [Release notes](https://github.com/celery/celery/releases)
- [Changelog](https://github.com/celery/celery/blob/master/Changelog.rst)
- [Commits](celery/celery@v5.2.2...v5.2.3)

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

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

Author: dependabot[bot]

requirements.txt

@@ -4,6 +4,6 @@ aiohttp==3.8.1
 gidgethub==5.1.0
 cachetools==5.0.0
 redis==4.1.0
-celery==5.2.2
+celery==5.2.3
 sentry-sdk==1.5.2
 click==8.0.3