chore(deps): bump nixpkgs from 6774f7b to 151fa4e in /nix (#6078)

Bumps [nixpkgs](https://github.com/NixOS/nixpkgs) from `6774f7b` to `151fa4e`.
- [Commits](6774f7bc25...151fa4e8dd)

---
updated-dependencies:
- dependency-name: nixpkgs
  dependency-version: 151fa4e8ddfdd8dd25d945ad94ed54a13de9f6e4
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

nix/flake.lock

@@ -20,11 +20,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1790046670,
-        "narHash": "sha256-MYiI+CzL0tuWgRPjGsKCDHqYs2T3OzMlMQWOYWG0qso=",
+        "lastModified": 1791260994,
+        "narHash": "sha256-Miqqk/ammqnTUxaoCyvtwoPeLbI1ksFyLxi/CazZpWY=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "6774f7bc253789b113a4f39285dc0fa100abeacc",
+        "rev": "151fa4e8ddfdd8dd25d945ad94ed54a13de9f6e4",
         "type": "github"
       },
       "original": {