openshift: 4.10.0 -> 4.11.0

The commit needs to be pinned because the release branches are not
tagged properly.

pkgs/applications/networking/cluster/openshift/default.nix

@@ -10,14 +10,14 @@
 
 buildGoModule rec {
   pname = "openshift";
-  version = "4.10.0";
-  gitCommit = "346b183";
+  version = "4.11.0";
+  gitCommit = "20dd77d5";
 
   src = fetchFromGitHub {
     owner = "openshift";
     repo = "oc";
-    rev = "release-4.10";
-    sha256 = "Pdq3OwT5P7vvB70X+GVglT9CdJbhkm35nvEGurO1HPc=";
+    rev = "20dd77d5c889f86b05e2bdd182853ae702852c63";
+    sha256 = "wqLo/CKGzeMDJUoI9PUEjJER5hSPu+FmUCJLPZ9PJuw=";
   };
 
   vendorSha256 = null;