Bump celery from 4.2.0rc4 to 5.2.2 in /services/phame

Bumps [celery](https://github.com/celery/celery) from 4.2.0rc4 to 5.2.2.
- [Release notes](https://github.com/celery/celery/releases)
- [Changelog](https://github.com/celery/celery/blob/master/Changelog.rst)
- [Commits](celery/celery@v4.2.0rc4...v5.2.2)

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

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

Author: dependabot[bot]

services/phame/requirements-prod.txt

@@ -2,7 +2,7 @@ amqp==2.2.2
 Babel==2.9.1
 beautifulsoup4==4.4.0
 billiard==3.5.0.3
-celery==4.2.0rc4
+celery==5.2.2
 coverage==4.5.2
 click==6.7
 flake8===3.6.0

services/phame/requirements.txt

@@ -2,7 +2,7 @@ amqp==2.2.2
 Babel==2.9.1
 beautifulsoup4==4.4.0
 billiard==3.5.0.3
-celery==4.2.0rc4
+celery==5.2.2
 coverage==4.5.2
 click==6.7
 flake8===3.6.0