grafana: Update to 9.2.1

upstream changes:
-----------------
9.2.1 (2022-10-18)
Features and enhancements
  o Alerting: Improve notification policies created during migration
  o AzureAD: Add option to force fetch the groups from the Graph API
  o AzureAD: Add option to force fetch the groups from the Graph API
  o Docs: Note end of release notes publication
  o Inspect: Handle JSON tab crash when the provided object is too big to
    stringify
  o TablePanel: Footer now updates values on column filtering
Bug fixes
  o Alerting: Fix email image embedding on Windows
  o Alerting: Fix mathexp.NoData for ConditionsCmd
  o Legacy Alerting: Fix duration calculation when testing a rule
  o Loki: Propagate additional headers from Grafana to Loki when querying data
  o Search: Sort alphabetically in the folder view, increase the limit of the
    folder search from 50 to 1000
  o TablePanel: Fix last table column to be centered.
Plugin development fixes & changes
  o Grafana UI: Export prop types for queryfield, modal and field components
  o Toolkit: Fix Cannot use import statement outside... error in tests

(triaxx)