Bump celery from 5.3.1 to 5.3.4 in /requirements

Bumps [celery](https://github.com/celery/celery) from 5.3.1 to 5.3.4.
- [Release notes](https://github.com/celery/celery/releases)
- [Changelog](https://github.com/celery/celery/blob/main/Changelog.rst)
- [Commits](celery/celery@v5.3.1...v5.3.4)

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

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

requirements/prod.txt

@@ -241,9 +241,9 @@ bitarray == 2.8.1 \
 bleach==6.0.0 \
     --hash=sha256:1a1a85c1595e07d8db14c5f09f09e6433502c51c595970edc090551f0db99414 \
     --hash=sha256:33c16e3353dbd13028ab4799a0f89a83f113405c766e9c122df8a06f5b85b3f4
-celery==5.3.1 \
-    --hash=sha256:27f8f3f3b58de6e0ab4f174791383bbd7445aff0471a43e99cfd77727940753f \
-    --hash=sha256:f84d1c21a1520c116c2b7d26593926581191435a03aa74b77c941b93ca1c6210
+celery==5.3.4 \
+    --hash=sha256:1e6ed40af72695464ce98ca2c201ad0ef8fd192246f6c9eac8bba343b980ad34 \
+    --hash=sha256:9023df6a8962da79eb30c0c84d5f4863d9793a466354cc931d7f72423996de28
 # charset-normalizer is required by requests
 charset-normalizer==3.2.0 \
     --hash=sha256:04e57ab9fbf9607b77f7d057974694b4f6b142da9ed4a199859d9d4d5c63fe96 \