chore(deps): update dependency grafana.grafana to v6.0.6

Author: renovate[bot]

roles/requirements.yml

@@ -12,7 +12,7 @@ collections:
   version: 10.3.1
 - name: grafana.grafana
   type: galaxy
-  version: 6.0.3
+  version: 6.0.6
 - name: hifis.toolkit
   type: galaxy
   version: 6.1.0