flake: update nixpkgs inputs

Flake lock file updates:

• Updated input 'nixpkgs-stable':
    'github:NixOS/nixpkgs/bfd953b2c6de4f550f75461bcc5768b6f966be10' (2023-08-15)
  → 'github:NixOS/nixpkgs/b30c68669df77d981ce4aefd6b9d378563f6fc4e' (2023-08-16)

1 files changed, 3 insertions, 3 deletions

diff --git a/flake.lock b/flake.lock
index 55be416..70f7668 100644
--- a/flake.lock
+++ b/flake.lock
@@ -369,11 +369,11 @@
     },
     "nixpkgs-stable": {
       "locked": {
-        "lastModified": 1692134936,
-        "narHash": "sha256-Z68O969cioC6I3k/AFBxsuEwpJwt4l9fzwuAMUhCCs0=",
+        "lastModified": 1692207601,
+        "narHash": "sha256-tfPGNKQcJT1cvT6ufqO/7ydYNL6mcJClvzbrzhKjB80=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "bfd953b2c6de4f550f75461bcc5768b6f966be10",
+        "rev": "b30c68669df77d981ce4aefd6b9d378563f6fc4e",
         "type": "github"
       },
       "original": {