chore(deps): update redis docker tag to v20.13.4

This MR contains the following updates:

Package	Type	Update	Change
redis (source)	HelmChart	patch	20.13.1 -> 20.13.4

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Release Notes

bitnami/charts (redis)

v20.13.4

• [bitnami/redis] Switch shell from /bin/sh to /bin/bash to improve process handling (#​33181)

v20.13.2

• [bitnami/redis] Release 20.13.2 (#​33157) (98a2ec9), closes #​33157

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