Update Grafana and node-exporter addons

* https://github.com/grafana/grafana/releases/tag/v8.1.0
* https://github.com/prometheus/node_exporter/releases/tag/v1.2.1

CHANGES.md

@@ -13,6 +13,11 @@ Notable changes between versions.
   * Rename Fedora CoreOS Config to Butane Config
   * Require any [snippets](https://typhoon.psdn.io/advanced/customization/#hosts) customizations to update to v1.4.0
 
+### Addons
+
+* Update node-exporter from v1.2.0 to [v1.2.1](https://github.com/prometheus/node_exporter/releases/tag/v1.2.1)
+* Update Grafana from v8.0.6 to [v8.1.0](https://github.com/grafana/grafana/releases/tag/v8.1.0)
+
 ## v1.21.3
 
 * Kubernetes [v1.21.3](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.21.md#v1213)

addons/grafana/deployment.yaml

@@ -24,7 +24,7 @@ spec:
           type: RuntimeDefault
       containers:
         - name: grafana
-          image: docker.io/grafana/grafana:8.0.6
+          image: docker.io/grafana/grafana:8.1.0
           env:
             - name: GF_PATHS_CONFIG
               value: "/etc/grafana/custom.ini"

addons/prometheus/exporters/node-exporter/daemonset.yaml

@@ -28,7 +28,7 @@ spec:
       hostPID: true
       containers:
       - name: node-exporter
-        image: quay.io/prometheus/node-exporter:v1.2.0
+        image: quay.io/prometheus/node-exporter:v1.2.1
         args:
           - --path.procfs=/host/proc
           - --path.sysfs=/host/sys