flake: update nixpkgs

Flake lock file updates:

• Updated input 'nixpkgs-stable':
    'github:NixOS/nixpkgs/21cc704b5e918c5fbf4f9fff22b4ac2681706d90?narHash=sha256-68hmex5efCiM2aZlAAEcQgmFI4ZwWt8a80vOeB/5w3A%3D' (2024-08-06)
  → 'github:NixOS/nixpkgs/a781ff33ae258bbcfd4ed6e673860c3e923bf2cc?narHash=sha256-oTK91aOlA/4IsjNAZGMEBz7Sq1zBS0Ltu4/nIQdYDOg%3D' (2024-08-10)

1 files changed, 3 insertions, 3 deletions

diff --git a/flake.lock b/flake.lock
index d3174d7..b5902f9 100644
--- a/flake.lock
+++ b/flake.lock
@@ -340,11 +340,11 @@
     },
     "nixpkgs-stable": {
       "locked": {
-        "lastModified": 1722987190,
-        "narHash": "sha256-68hmex5efCiM2aZlAAEcQgmFI4ZwWt8a80vOeB/5w3A=",
+        "lastModified": 1723282977,
+        "narHash": "sha256-oTK91aOlA/4IsjNAZGMEBz7Sq1zBS0Ltu4/nIQdYDOg=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "21cc704b5e918c5fbf4f9fff22b4ac2681706d90",
+        "rev": "a781ff33ae258bbcfd4ed6e673860c3e923bf2cc",
         "type": "github"
       },
       "original": {