fix: set schemaVersion on dashboard schema (CUE) (#87712)

* fix: set schemaVersion on dashboard schema (CUE)

* docs: add comment to migration code

* fix: run make gen-cue

kinds/dashboard/dashboard_kind.cue

@@ -74,7 +74,7 @@ lineage: schemas: [{
 
 			// Version of the JSON schema, incremented each time a Grafana update brings
 			// changes to said schema.
-			schemaVersion: uint16 | *36
+			schemaVersion: uint16 | *39
 
 			// Version of the dashboard, incremented each time the dashboard is updated.
 			version?: uint32

packages/grafana-schema/src/raw/dashboard/x/dashboard_types.gen.ts

@@ -1182,7 +1182,7 @@ export const defaultDashboard: Partial<Dashboard> = {
   graphTooltip: DashboardCursorSync.Off,
   links: [],
   panels: [],
-  schemaVersion: 36,
+  schemaVersion: 39,
   tags: [],
   timezone: 'browser',
 };

public/app/features/dashboard/state/DashboardMigrator.ts

@@ -76,6 +76,10 @@ type PanelSchemeUpgradeHandler = (panel: PanelModel) => PanelModel;
  * To add a dashboard migration increment this number
  * and then add your migration at the bottom of 'updateSchema'
  * hint: search "Add migration here"
+ *
+ * This number also needs to be updated on the CUE schema:
+ * kinds/dashboard/dashboard_kind.cue
+ * Example PR: #87712
  */
 export const DASHBOARD_SCHEMA_VERSION = 39;
 export class DashboardMigrator {