Use ARM64 compatible kube-rbac-proxy from upstream (#310)

* as pointed out in #281 the currently used image for the 
kube-rbac-proxy - gcr.io/kubebuilder/kube-rbac-proxy:v0.4.1" - does not 
have an ARM64 image
* hence, trying to use the standard deployment manifest / helm char will 
fail on ARM64 systems
* replaced image with quay.io/brancz/kube-rbac-proxy:v0.8.0 which is the 
latest version from the upstream maintainer 
(https://github.com/brancz/kube-rbac-proxy/blob/master/Makefile#L13)
* successfully tested on both AMD64 and ARM64 clusters
* fixes #281

charts/actions-runner-controller/values.yaml

@@ -28,8 +28,8 @@ image:
 
 kube_rbac_proxy:
   image:
-    repository: gcr.io/kubebuilder/kube-rbac-proxy
-    tag: v0.4.1
+    repository: quay.io/brancz/kube-rbac-proxy
+    tag: v0.8.0
 
 imagePullSecrets: []
 nameOverride: ""

config/default/manager_auth_proxy_patch.yaml

@@ -10,7 +10,7 @@ spec:
     spec:
       containers:
       - name: kube-rbac-proxy
-        image: gcr.io/kubebuilder/kube-rbac-proxy:v0.4.1
+        image: quay.io/brancz/kube-rbac-proxy:v0.8.0
         args:
         - "--secure-listen-address=0.0.0.0:8443"
         - "--upstream=http://127.0.0.1:8080/"