fix: don't b64 encode configmap data

[marvinWolff]

In this PR the Dashboards were switched from secret to configmap, but the base64 encoding wasn't removed.

Also, a little bit of formatting was needed, as otherwise the deployment would fail.

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[Slach]

nice catch, thanks for contribution

[marvinWolff]

@Slach Do you know when this is going to be released?

[Slach]

we don't provide public ETA

[marvinWolff]

Hello @Slach,

this is currently blocking our deployment, as we can't use the Dashboards. Could you take another look at this and maybe create a release?

Thank you.