Release notes for Grafana 9.0.2

Alerting: Add support for images in Pushover alerts. #51372, @grobinson-grafana
Alerting: Don’t stop the migration when alert rule tags are invalid. #51253, @gotjosh
Alerting: Don’t stop the migration when alert rule tags are invalid (…. #51341, @gotjosh
Alerting: Skip the default data source if incompatible. #51452, @gillesdemey
AzureMonitor: Parse non-fatal errors for Logs. #51320, @andresmgot
OAuth: Restore debug log behavior. #51244, @Jguer
Plugins: Improved handling of symlinks. #51324, @marefr

Alerting: Code-gen parsing of URL parameters and fix related bugs. #51353, @alexweav
Alerting: Code-gen parsing of URL parameters and fix related bugs. #50731, @alexweav
Annotations: Fix annotation autocomplete causing panels to crash. #51164, @ashharrison90
Barchart: Fix warning not showing. #51190, @joshhunt
CloudWatch: Enable custom session duration in AWS plugin auth. #51322, @sunker
Dashboards: Fixes issue with the initial panel layout counting as an unsaved change. #51315, @JoaoSilvaGrafana
Plugins: Use a Grafana specific SDK logger implementation for core plugins. #51229, @marefr
Search: Fix pagination in the new search page. #51366, @ArturWierzbicki