Update nixpkgs

flake.lock

@@ -5,11 +5,11 @@
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1731533236,
-        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "lastModified": 1791914995,
+        "narHash": "sha256-Zf/xfQEAasnwnmEfHqW/4hjDE/s44yn2hD4RuVIZRjA=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "rev": "b7a79d3fea1e214f6d668d521cecec0c01e26544",
         "type": "github"
       },
       "original": {
@@ -20,12 +20,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1780930886,
-        "narHash": "sha256-rppURzHviaQN131F+nLiLdGfcb0uCd9gGP0E5+iw9MI=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "8c3cede7ddc26bd659d2d383b5610efbd2c7a16e",
-        "type": "github"
+        "lastModified": 1793977579,
+        "narHash": "sha256-4/Yzr1fWTh/zBAR1tR84ZQ1Zhmor8AXwgD4AS7sPn60=",
+        "rev": "4fe25e12eb9f4c744966dd3de5a05246cf098601",
+        "type": "tarball",
+        "url": "https://releases.nixos.org/nixpkgs/nixpkgs-26.11pre1109744.4fe25e12eb9f/nixexprs.tar.zst"
       },
       "original": {
         "id": "nixpkgs",