feat: add alerts for cost monitoring system

[jnywong]

Ref #8123

[github-actions]

Merging this PR will trigger the following deployment actions.

Support deployments

Cloud Provider	Cluster Name	Reason for Redeploy
aws	reflective	Support helm chart has been modified
aws	ucmerced	Support helm chart has been modified
aws	smithsonian	Support helm chart has been modified
gcp	2i2c-uk	Support helm chart has been modified
aws	nasa-ghg-hub	Support helm chart has been modified
kubeconfig	projectpythia-binder	Support helm chart has been modified
gcp	2i2c	Support helm chart has been modified
kubeconfig	utoronto	Support helm chart has been modified
aws	bnext-bio	Support helm chart has been modified
aws	earthscope	Support helm chart has been modified
aws	openscapeshub	Support helm chart has been modified
aws	nasa-cryo	Support helm chart has been modified
aws	nmfs-openscapes	Support helm chart has been modified
gcp	cloudbank	Support helm chart has been modified
aws	jupyter-health	Support helm chart has been modified
aws	aimatx-2i2c-hub	Support helm chart has been modified
aws	disasters	Support helm chart has been modified
aws	maap	Support helm chart has been modified
gcp	hhmi	Support helm chart has been modified
aws	nasa-veda	Support helm chart has been modified
aws	victor	Support helm chart has been modified
gcp	awi-ciroh	Support helm chart has been modified
gcp	leap	Support helm chart has been modified
gcp	dubois	Support helm chart has been modified
kubeconfig	2i2c-jetstream2	Support helm chart has been modified
aws	berkeley-geojupyter	Support helm chart has been modified
aws	temple	Support helm chart has been modified
aws	opensci	Support helm chart has been modified
aws	projectpythia	Support helm chart has been modified
aws	2i2c-aws-us	Support helm chart has been modified

Staging deployments

No staging hub upgrades will be triggered

Production deployments

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