chart: update monitoring resources

[bonddim]

This pull request includes several changes to the Helm chart and associated files to update configurations and improve monitoring settings. The most important changes include modifying monitoring settings, and making adjustments to the Grafana dashboard configuration.

Monitoring settings:

• Disabled rendering of Prometheus resources by default.
• Added a new relabeling configuration to replace the instance label based on the app_kubernetes_io_name label. Instance will be displayed as Helm release name instead of pod IP address.

Grafana dashboard configuration:

• Changed the interval field for several metrics queries from "$__rate_interval" to "$interval".
• Updated the refresh interval from 30s to 1m.
• Added a new variable for Step Interval with default value 2m.

Chart version update:

• Updated the chart version from 0.4.0 to 0.5.0.