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Update default params of chart dependencies (#473)

### Description of the change

Update default params of chart dependencies. Tested with multiple upgrades and fresh installations.
Using no password auth for redis simplifies things for basic installations. Production installations should properly configure auth as they need it.

### Benefits

To avoid/solve upgrading issues as in #407 and #472

Reviewed-on: https://gitea.com/gitea/helm-chart/pulls/473
Co-authored-by: pat-s <patrick.schratz@gmail.com>
Co-committed-by: pat-s <patrick.schratz@gmail.com>
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Gitea Version: 1.28.0+dev-528-ga5a645824f