fix: upgrade Grafana stack

[srodenhuis]

Upgrade the following charts:

loki-distributed

Current version: 0.69.16

New version: 0.79.4

promtail

Current version: 6.11.2

New version: 6.16.6

tempo-distributed

Current version: 1.4.2

New version: 1.18.5

Bug fixes

• Istio Sidecar for team observability (Grafana and Alertmanager)

Checklist

• Architecture Design Records have been added as adr/*.md and appended to list in adr/_index.md, if applicable.
• The values-schema.yaml file and test/** fixtures have been updated to reflect code changes, if applicable.
• The OpenApi Schema from redkubes/otomi-api project is compatible with definitions from values-schema.yaml file, if applicable.
• Helm releases are meeting otomi's baseline security policies, if applicable.
• Helm chart and helmfile changes are tested against upgrade scenario, if applicable.

[merll]

Not sure what it is yet, but I am getting a 503 on the team Grafana instance.
Was checking on two teams, it was just not activated on the one I was checking. The ingress did already exist however. Maybe we should consider not showing the Loki link if the team does not have team monitoring enabled. But that's for another PR.