v3.4.0

• feature: persistent storage for the Grafana Data directory. Thanks @polefishu
• feature: namespace selector when --scan-all is used. Thanks @R-Lawton
• feature: configuring Grafana container security context. Thanks @AdheipSingh
• fix: deadlock caused by readiness probe when upgrading. Thanks @Rajagopalan-Ranganathan
• cleanup remove useless function call. Thanks @kqzh