linux_zen: 5.18.0-zen1 -> 5.18.1-zen1

This also disables WERROR, which is necessary until #175433 reaches
master (which disables it for all kernels).

pkgs/os-specific/linux/kernel/linux-zen.nix

@@ -2,7 +2,7 @@
 
 let
   # having the full version string here makes it easier to update
-  modDirVersion = "5.18.0-zen1";
+  modDirVersion = "5.18.1-zen1";
   parts = lib.splitString "-" modDirVersion;
   version = lib.elemAt parts 0;
   suffix = lib.elemAt parts 1;
@@ -20,11 +20,14 @@ buildLinux (args // {
     owner = "zen-kernel";
     repo = "zen-kernel";
     inherit rev;
-    sha256 = "sha256-A0QrY1REbRODnHtmyNqVaiLhDgYCECevfHZCxtoQ9kU=";
+    sha256 = "sha256-LCLfLE85NifuskYl2dxLOJEsUNHLegF8ecYyU4xOCtY=";
   };
 
   structuredExtraConfig = with lib.kernel; {
     ZEN_INTERACTIVE = yes;
+    # TODO: Remove once #175433 reaches master
+    # https://nixpk.gs/pr-tracker.html?pr=175433
+    WERROR = no;
   };
 
   extraMeta = {