chore: remove promtail

[merll]

📌 Summary

This removes the obsolete Helm chart and values of Promtail, which has been replaced with an OpenTelemetry Collector. It also removes all conditions, activating either one or the other in a migration scenario.

🔍 Reviewer Notes

🧹 Checklist

• Code is readable, maintainable, and robust.
• Unit tests added/updated

[svcAPLBot]

Comparison of Helm chart templating output:

# otomi-api/templates/configmap.yaml

@@ data.VERSIONS @@
! ± value change in multiline text (one insert, one deletion)
  
- {"api":"main","aplCharts":"main","console":"main","consoleLogin":"main","core":"main","specVersion":67,"tasks":"main","tools":"main"}
+ {"api":"main","aplCharts":"main","console":"main","consoleLogin":"main","core":"main","specVersion":68,"tasks":"main","tools":"main"}

# otomi-api/templates/deployment.yaml

# rabbitmq-cluster-operator/templates/messaging-topology-operator/validating-webhook-configuration.yaml

# values-repo.yaml

@@ versions.specVersion @@
! ± value change
- 67
+ 68