chore(deps): update redis docker tag to v20.7.0

This MR contains the following updates:

Package	Type	Update	Change
redis (source)	HelmChart	minor	20.6.3 -> 20.7.0

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Release Notes

bitnami/charts (redis)

v20.7.0

• [bitnami/redis] Redis ACL support to the Bitnami Redis Helm Chart (#​31707)

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