flake.lock: Update

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/dc5d91f840324650bac8c379428c7037a416959a?narHash=sha256-VaWGJ6%2BcIYN2erfSecbRV%2B4ljI185Ty2wUrXyvQbgOw%3D' (2026-09-07)
  → 'github:nixos/nixpkgs/ef34387ddd751e1ab8857adf4676492d32eb24ec?narHash=sha256-eiEK7cKZORNEvX0GeF3RtNEF/JXhgf2RqSp3230q13E%3D' (2026-09-13)

.github/workflows/update.yml

@@ -23,7 +23,7 @@ jobs:
           authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
           extraPullNames: rstats-on-nix, nix-community
       - name: Update ed flake.lock
-        uses: DeterminateSystems/update-flake-lock@v29
+        uses: DeterminateSystems/update-flake-lock@v28
         with:
           token: ${{ secrets.GH_TOKEN_FOR_UPDATES }}
           branch: update_ed

templates/ed/flake.lock

@@ -22,11 +22,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1789426278,
-        "narHash": "sha256-GnotcvKtbTMnoVx6G4E7ZdUX6487Dky74dqq3pU7iRk=",
+        "lastModified": 1789286504,
+        "narHash": "sha256-eiEK7cKZORNEvX0GeF3RtNEF/JXhgf2RqSp3230q13E=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "efe6f071ede9d21c37462d2d6682d5e670099684",
+        "rev": "ef34387ddd751e1ab8857adf4676492d32eb24ec",
         "type": "github"
       },
       "original": {