[6.11.z] Bump redis from 4.6.0 to 5.0.0 (#12251)

Bump redis from 4.6.0 to 5.0.0 (#12247)

(cherry picked from commit ecdc1e9)

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

requirements-optional.txt

@@ -1,7 +1,7 @@
 # For running tests and checking code quality using these modules.
 flake8==6.1.0
 pytest-cov==4.1.0
-redis==4.6.0
+redis==5.0.0
 pre-commit==3.3.3
 
 # For generating documentation.