Update upstream helm chart

This MR contains the following updates:

Manual renovate update actuals:

• k8s-monitoring-v1 chart 1.6.0 -> 1.6.4
• appVersion: 2.8.5
• alloy helm chart tag 0.9.1
  • appVersion 1.4.2 here
  • configmap v0.12.0 here

Package	Update	Change
k8s-monitoring	patch	1.6.0 -> 1.6.4
registry1.dso.mil/ironbank/opensource/grafana/alloy (source)	patch	v1.4.2 -> v1.4.3
registry1.dso.mil/ironbank/opensource/jimmidyson/configmap-reload (source)	minor	v0.12.0 -> v0.14.0

Complete MR checklist

Assignee

• Followed upgrade instructions outlined in docs/DEVELOPMENT_MAINTENANCE.md
• Update Docs with new/updated steps as needed
• Tested and Validated Changes made with supporting info like logs or screenshots from test pipelines

Add supporting info below

Reviewer only

• Tested and Validated changes

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Upgrade Notices

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