Update Renovate config

Cleanup Renovate config, aligning to other package configs as much as possible, including:

• Remove "commitMessagePrefix": "SKIP UPDATE CHECK"
• Ensuring "renovate", "kind::maintenance", "team::Observability" labels are present
• Update "enabledManagers" to use current standards: ["custom.regex", "helm-values", "helmv3"]
• Add appropriate "postUpgradeTasks"
• Convert "regexManagers" to "customManagers" as needed (preferably to include all app/image/chart version regex managers)

Test changes with the renovate-runner

added kinddocs priority6 statusready-to-work teamObservability labels

set weight to 2

changed iteration to Big Bang Iterations Jan 21, 2025 - Feb 3, 2025

assigned to @steven.donald

added statusdoing label and removed statusready-to-work label

created branch 223-update-renovate-config to address this issue

mentioned in merge request !299 (merged)

changed weight to 0 from 2

closed with merge request !299 (merged)

mentioned in commit fe38c52b

removed statusdoing label