Update 8.1 upstream grafana version to 12.2.0

Signed-off-by: Rakshitha-Kamath <Rakshitha.Kamath@ibm.com>

Author: Rakshitha-Kamath

Dockerfile

@@ -68,7 +68,7 @@ ENTRYPOINT [ "/run.sh" ]
 # Build specific labels
 LABEL maintainer="Nizamudeen A <nia@redhat.com>"
 LABEL com.redhat.component="grafana-container"
-LABEL version=11.6.2
+LABEL version=12.2.0
 LABEL name="grafana"
 LABEL description="Red Hat Ceph Storage Grafana container"
 LABEL summary="Grafana container on RHEL 9 for Red Hat Ceph Storage"