cut 1.2.0 release

[nschad]

Signed-off-by: ShuzZzle [email protected]

What this PR does:

• [CHANGE] Use port number for prometheus port annotations. Use port numbers instead of names in prometheus annotations. #288
• [CHANGE] Disable ingester startup probes by default. Disable ingester startup probe by default. #286
• [CHANGE] Moved HPA memory specification to be the first item in the list. hpas always show out of sync in ArgoCD #284
• [FEATURE] Optionally manage cortex config as configmap. Optionally pass cortex config as configmap. #280
• [ENHANCEMENT] Upgrade to Cortex v1.11.0 Update quay.io/cortexproject/cortex Docker tag to v1.11.0 #272
• [DEPENDENCY] Update Helm release memcached to v5.15.12 Update Helm release memcached to v5.15.12 #274

Which issue(s) this PR fixes:
n.a.

Checklist

• CHANGELOG.md updated - the order of entries should be [CHANGE], [FEATURE], [ENHANCEMENT], [BUGFIX]