fix(falcosidekick): customConfig template fix for webui redis

[krkjack]

What type of PR is this?

/kind bug

/kind chart-release

Any specific area of the project related to this PR?

/area falcosidekick-chart

What this PR does / why we need it:

Currently defining falcosidekick.webui.redis.customConfigin values.yaml results in templating error:

Error: YAML parse error on falco/charts/falco/charts/falcosidekick/templates/configmap-ui.yaml: error converting YAML to JSON: yaml: line 17: 
did not find expected key

Using --debug switch shows us that one line is unnecessary suppressed (the key data is joined with redis-stack.config):

data:redis-stack.config: |-
    maxmemory-policy allkeys-lfu
    maxmemory 4096mb

Tested with values.yaml:

falcosidekick:
  webui:
    redis:
      customConfig: 
        - maxmemory-policy allkeys-lfu
        - maxmemory 4096mb

Which issue(s) this PR fixes:

Special notes for your reviewer:

Checklist

• Chart Version bumped
• Variables are documented in the README.md
• CHANGELOG.md updated

[poiana]

Welcome @krkjack! It looks like this is your first PR to falcosecurity/charts 🎉

[poiana]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Issif, krkjack

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[poiana]

LGTM label has been added.

Git tree hash: ad4d3cd51b7c770b789f53ed9d3889961fc074d1