fix: Use nixpkgs 25.05 for building the kernel for the Surface tablets

instead of 25.11

flake.lock

@@ -266,6 +266,22 @@
         "type": "github"
       }
     },
+    "nixos-hardware": {
+      "locked": {
+        "lastModified": 1764440730,
+        "narHash": "sha256-ZlJTNLUKQRANlLDomuRWLBCH5792x+6XUJ4YdFRjtO4=",
+        "owner": "NixOS",
+        "repo": "nixos-hardware",
+        "rev": "9154f4569b6cdfd3c595851a6ba51bfaa472d9f3",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "master",
+        "repo": "nixos-hardware",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1732981179,
@@ -282,6 +298,22 @@
         "type": "github"
       }
     },
+    "nixpkgs-old-kernel": {
+      "locked": {
+        "lastModified": 1764560356,
+        "narHash": "sha256-M5aFEFPppI4UhdOxwdmceJ9bDJC4T6C6CzCK1E2FZyo=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "6c8f0cca84510cc79e09ea99a299c9bc17d03cb6",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-25.05",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "nixpkgs_2": {
       "locked": {
         "lastModified": 1764522689,
@@ -359,7 +391,9 @@
         "disko": "disko",
         "home-manager": "home-manager",
         "lazyvim-nixvim": "lazyvim-nixvim",
-        "nixpkgs": "nixpkgs_2"
+        "nixos-hardware": "nixos-hardware",
+        "nixpkgs": "nixpkgs_2",
+        "nixpkgs-old-kernel": "nixpkgs-old-kernel"
       }
     },
     "systems": {