build(deps): update module github.com/redis/go-redis/v9 to v9.6.1

mentioned in commit 40a0e35e

mentioned in issue #1319 (closed)

mentioned in merge request omnibus-gitlab!7826 (merged)

mentioned in merge request gitlab-org/charts/gitlab!3872 (merged)

mentioned in merge request lucus.li/CNG!4 (closed)