fix: Disable creation of keycloak-database secret if keycloak is disabled

[florianrusch-zf]

Description

This change disables the creation of the keycloak-database secret if keycloak is disabled at all

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[florianrusch-zf]

@tunacicek @LuLeRoemer the pipelines failed, because the chart version needs to be bumped. How did you handle this in the past? Should each change on the chart contains a version bump? Or do you bump only once if you release a new version? https://github.com/eclipse-tractusx/sldt-digital-twin-registry/actions/runs/5666878597/job/15354511257?pr=178

[tunacicek]

Hi @florianrusch-zf,
yes, on each change in the chart the chart-version needs to be increased. So in this PR, increase the chart version from 0.3.12 to 0.3.13

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

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[tunacicek]

LGTM