Merge pull request #958 from product-os/renovate/balena-cert-manager-0.4.x

Update balena/cert-manager Docker tag to v0.4.6

Author: balena-renovate[bot]

cert-manager/Dockerfile

@@ -1,4 +1,4 @@
 # FIXME: switch to bh.cr/balena/cert-manager/x.y.z when multi-arch ships
-FROM balena/cert-manager:0.4.5
+FROM balena/cert-manager:0.4.6
 
 COPY *.json /opt/