Update celery requirement from ~=5.4.0 to ~=5.5.1 (#918)

Updates the requirements on [celery](https://github.com/celery/celery) to permit the latest version.
- [Release notes](https://github.com/celery/celery/releases)
- [Changelog](https://github.com/celery/celery/blob/main/Changelog.rst)
- [Commits](celery/celery@v5.4.0...v5.5.1)

---
updated-dependencies:
- dependency-name: celery
  dependency-version: 5.5.1
  dependency-type: direct:production
...

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

Author: dependabot[bot]

pyproject.toml

@@ -78,7 +78,7 @@ Source = "https://github.com/workfloworchestrator/orchestrator-core"
 
 [project.optional-dependencies]
 celery = [
-    "celery~=5.4.0"
+    "celery~=5.5.1"
 ]
 
 test = [