flake.lock: Update

Flake lock file updates:

• Updated input 'fenix':
    'github:nix-community/fenix/52a05c3c76b3e2b627edc81d57ab35877846bfae' (2023-09-05)
  → 'github:nix-community/fenix/b2f49e4f86582a8e3015f9cc4b869a9c9a28b3cf' (2023-09-06)
• Updated input 'fenix/rust-analyzer-src':
    'github:rust-lang/rust-analyzer/2df30e1e07eafc1de0359566423f471920693a34' (2023-09-03)
  → 'github:rust-lang/rust-analyzer/b9a9722bda8f1ff7d8691701b98a753f74e70c06' (2023-09-05)
• Updated input 'home-manager':
    'github:nix-community/home-manager/3c0e381fef63e4fbc6c3292c9e9cbcf479c01794' (2023-09-05)
  → 'github:nix-community/home-manager/b22d7bab30076bbb73744867d6c5bf7d6380570c' (2023-09-06)
• Updated input 'nix':
    'github:NixOS/nix/f34484d18a64ff8120ed94926b75c8797cfba536' (2023-09-05)
  → 'github:NixOS/nix/964d186e5d7e2ec19b9409df01674ea82e8aa6c7' (2023-09-06)
• Updated input 'rycee':
    'gitlab:rycee/nur-expressions/64704beee52000f47146a7d96e4a167e10376099' (2023-09-05)
  → 'gitlab:rycee/nur-expressions/0dd9d065f4bc026180a9f2b24ee48a039bea3384' (2023-09-06)