kops: 1.21.0 -> 1.21.1 (#136057)

nixos/doc/manual/from_md/release-notes/rl-2111.section.xml

···
       </listitem>
       <listitem>
         <para>
-          kOps now defaults to 1.21.0, which uses containerd as the
+          kOps now defaults to 1.21.1, which uses containerd as the
           default runtime.
         </para>
       </listitem>

nixos/doc/manual/release-notes/rl-2111.section.md

···
 ## Highlights {#sec-release-21.11-highlights}
 
 - PHP now defaults to PHP 8.0, updated from 7.4.
-- kOps now defaults to 1.21.0, which uses containerd as the default runtime.
+
+- kOps now defaults to 1.21.1, which uses containerd as the default runtime.
 
 - `python3` now defaults to Python 3.9, updated from Python 3.8.
 

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

···
   };
 
   kops_1_21 = mkKops rec {
-    version = "1.21.0";
-    sha256 = "sha256-T2i3qpg3GC7yaYCGrN1V5XXrUyT+Ce9Q4aV00gQJ7gM=";
+    version = "1.21.1";
+    sha256 = "sha256-/C/fllgfAovHuyGRY+LM09bsUpYdA8zDw1w0b9HnlBc=";
     rev = "v${version}";
   };
 }