Update grafana version tag to 9.1.0 (#54049)

* Update grafana version tag to 9.0.5

The user doing cut and paste will not notice and will install a old version of Grafana

* Update version to 9.1.0

Current latest tag is 9.1.0: https://hub.docker.com/r/grafana/grafana/tags

docs/sources/setup-grafana/installation/kubernetes.md

@@ -55,7 +55,7 @@ spec:
           - 0
       containers:
         - name: grafana
-          image: grafana/grafana:8.4.4
+          image: grafana/grafana:9.1.0
           imagePullPolicy: IfNotPresent
           ports:
             - containerPort: 3000