add probes for cache statefulsets - issue#9771 https://github.com/grafana/mimir/issues/9771

[Sabian-A]

What this PR does

add probes for cache statefulsets.

Which issue(s) this PR fixes or relates to

Fixes #9771

Checklist

• Tests updated.
• Documentation added.
• CHANGELOG.md updated - the order of entries should be [CHANGE], [FEATURE], [ENHANCEMENT], [BUGFIX].
• about-versioning.md updated with experimental features.

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