updates submodule links to 4.20

Author: wgahnagl

.gitmodules

@@ -1,11 +1,11 @@
 [submodule "ovn-kubernetes"]
 	path = ovn-kubernetes
 	url = https://github.com/openshift/ovn-kubernetes
-	branch = release-4.19
+	branch = release-4.20
 [submodule "containernetworking-plugins"]
 	path = containernetworking-plugins
 	url = https://github.com/openshift/containernetworking-plugins
-	branch = release-4.19
+	branch = release-4.20
 [submodule "promu"]
 	path = promu
 	url = https://github.com/openshift/prometheus-promu
@@ -15,24 +15,24 @@
 [submodule "kubelet"]
 	path = kubelet
 	url = https://github.com/openshift/kubernetes
-	branch = release-4.19
+	branch = release-4.20
 [submodule "containerd"]
 	path = containerd
 	url = https://github.com/openshift/containerd
-	branch = release-4.19
+	branch = release-4.20
 [submodule "hcsshim"]
 	path = hcsshim
 	url = https://github.com/openshift/hcsshim
-	branch = release-4.19
+	branch = release-4.20
 [submodule "cloud-provider-azure"]
 	path = cloud-provider-azure
 	url = https://github.com/openshift/cloud-provider-azure
-	branch = release-4.19
+	branch = release-4.20
 [submodule "csi-proxy"]
 	path = csi-proxy
 	url = https://github.com/openshift/csi-proxy
-	branch = release-4.19
+	branch = release-4.20
 [submodule "cloud-provider-aws"]
 	path = cloud-provider-aws
 	url = https://github.com/openshift/cloud-provider-aws
-	branch = release-4.19
+	branch = release-4.20