v2.60.0

What's Changed

• Adds a new GKE Datasource variable to SiteOverview by @nkinkade in #932
• Add Gardener errors panel by @stephen-soltesz in #933
• Add gardener_jobs_total error rate to error panel by @stephen-soltesz in #934
• Add mixed data source for global test rates with locate queries by @stephen-soltesz in #935
• Add k8s v1.22 support for nginx IngressClass by @stephen-soltesz in #936
• Update GCS transfer alert to ignore archive-mlab-oti by @stephen-soltesz in #939

Full Changelog: v2.59.0...v2.60.0