flake.lock: Update (#4674)

Flake lock file updates:

• Updated input 'devenv':
    'github:cachix/devenv/45ae910e145829df787050560621b94551d7edd7?narHash=sha256-vQTLhyBh9PuP7gP9IZrbnEzcJV1p%2BPOEDdVTH5nBVdo%3D' (2025-04-11)
  → 'github:cachix/devenv/6599a8c6d02c1d37fe5b7804f70a39c262298729?narHash=sha256-045veG11u/fdRjYI%2B9dc19/u/14j7UFitwKWisE11Iw%3D' (2025-04-18)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/f9ebe33a928b5d529c895202263a5ce46bdf12f7?narHash=sha256-QZnNHM823am8apCqKSPdtnzPGTy2ZB4zIXOVoBp5%2BW0%3D' (2025-04-10)
  → 'github:NixOS/nixpkgs/26d499fc9f1d567283d5d56fcf367edd815dba1d?narHash=sha256-FHlSkNqFmPxPJvy%2B6fNLaNeWnF1lZSgqVCl/eWaJRc4%3D' (2025-04-12)
• Updated input 'treefmt-nix':
    'github:numtide/treefmt-nix/815e4121d6a5d504c0f96e5be2dd7f871e4fd99d?narHash=sha256-uhjnlaVTWo5iD3LXics1rp9gaKgDRQj6660%2BgbUU3cE%3D' (2025-04-04)
  → 'github:numtide/treefmt-nix/8d404a69efe76146368885110f29a2ca3700bee6?narHash=sha256-aRmUh0AMwcbdjJHnytg1e5h5ECcaWtIFQa6d9gI85AI%3D' (2025-04-18)

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

flake.lock

@@ -37,11 +37,11 @@
         "nixpkgs": "nixpkgs_3"
       },
       "locked": {
-        "lastModified": 1744394889,
-        "narHash": "sha256-vQTLhyBh9PuP7gP9IZrbnEzcJV1p+POEDdVTH5nBVdo=",
+        "lastModified": 1745020394,
+        "narHash": "sha256-045veG11u/fdRjYI+9dc19/u/14j7UFitwKWisE11Iw=",
         "owner": "cachix",
         "repo": "devenv",
-        "rev": "45ae910e145829df787050560621b94551d7edd7",
+        "rev": "6599a8c6d02c1d37fe5b7804f70a39c262298729",
         "type": "github"
       },
       "original": {
@@ -266,11 +266,11 @@
     },
     "nixpkgs_4": {
       "locked": {
-        "lastModified": 1744309437,
-        "narHash": "sha256-QZnNHM823am8apCqKSPdtnzPGTy2ZB4zIXOVoBp5+W0=",
+        "lastModified": 1744440957,
+        "narHash": "sha256-FHlSkNqFmPxPJvy+6fNLaNeWnF1lZSgqVCl/eWaJRc4=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "f9ebe33a928b5d529c895202263a5ce46bdf12f7",
+        "rev": "26d499fc9f1d567283d5d56fcf367edd815dba1d",
         "type": "github"
       },
       "original": {
@@ -296,11 +296,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1743748085,
-        "narHash": "sha256-uhjnlaVTWo5iD3LXics1rp9gaKgDRQj6660+gbUU3cE=",
+        "lastModified": 1744961264,
+        "narHash": "sha256-aRmUh0AMwcbdjJHnytg1e5h5ECcaWtIFQa6d9gI85AI=",
         "owner": "numtide",
         "repo": "treefmt-nix",
-        "rev": "815e4121d6a5d504c0f96e5be2dd7f871e4fd99d",
+        "rev": "8d404a69efe76146368885110f29a2ca3700bee6",
         "type": "github"
       },
       "original": {