Update redis Docker tag to v20.6.1

[ata-no-one]

This PR contains the following updates:

Package	Update	Change
redis (source)	minor	20.4.0 -> 20.6.1

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Release Notes

bitnami/charts (redis)

v20.6.1

• [bitnami/redis] Release 20.6.1 (#​31138)

v20.6.0

• [bitname/redis] Add support for master and replicas resources to be annotated (#​31034) (5111fa5), closes #​31034
• [bitnami/*] Fix typo in README (#​31052) (b41a51d), closes #​31052
• Redis Readme: fix typo in value key name (#​31007) (4a8c60a), closes #​31007

v20.5.0

• [bitnami/*] Add Bitnami Premium to NOTES.txt (#​30854) (3dfc003), closes #​30854
• [bitnami/redis] Detect non-standard images (#​30942) (f06f8db), closes #​30942

v20.4.1

• [bitnami/redis] CA shouldn't be mandatory when TLS is enabled (#​30520) (85219eb), closes #​30520

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