chore(deps): update redis requirement in /compose/backend (#1089)

Updates the requirements on [redis](https://github.com/redis/redis-py) to permit the latest version.
- [Release notes](https://github.com/redis/redis-py/releases)
- [Changelog](https://github.com/redis/redis-py/blob/master/CHANGES)
- [Commits](redis/redis-py@v4.4.0...v6.4.0)

---
updated-dependencies:
- dependency-name: redis
  dependency-version: 6.4.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

compose/backend/pyproject.toml

@@ -29,7 +29,7 @@ dependencies = [
     "psycopg2-binary~=2.8",
     "pyld~=2.0",
     "python-jose~=3.3",
-    "Redis~=4.4",
+    "Redis~=6.4",
     "scipy~=1.9",
     "shortuuid~=1.0",
     "sqlalchemy~=1.4",