Update internal flake.lock (#1004)

flake.lock: Update

Flake lock file updates:

• Updated input 'advisory-db':
    'github:rustsec/advisory-db/99e9de91bb8b61f06ef234ff84e11f758ecd5384?narHash=sha256-o/J7ZculgwSs1L4H4UFlFZENOXTJzq1X0n71x6oNNvY%3D' (2026-03-17)
  → 'github:rustsec/advisory-db/35667d8b55c23162d1297f44b62dae04a6396a59?narHash=sha256-ueyQhYu5Q5/XO31WuFDIkBWRkP3LLkJRUHMqbI2MAUs%3D' (2026-04-02)
• Updated input 'crane':
    'github:ipetkov/crane/6fa2fb4cf4a89ba49fc9dd5a3eb6cde99d388269?narHash=sha256-E1G/Or6MWeP%2BL6mpQ0iTFLpzSzlpGrITfU2220Gq47g%3D' (2026-03-11)
  → 'github:ipetkov/crane/9f137cf7cb1293c69c5bf3beda37c00c698ed6c0?narHash=sha256-SK9oZzrgeaaHgDXlc3fedpvoXhhw3cRb/7YXZhXN6%2BI%3D' (2026-04-03)
• Updated input 'fenix':
    'github:nix-community/fenix/b8b443c5a1bd8dd99df899b4ac786a7f410193e5?narHash=sha256-Wsk92HrZODmCgBb%2Bv7XfTMUAIEhqU%2BObwj%2B09IKRTpU%3D' (2026-03-18)
  → 'github:nix-community/fenix/0b88bfd10f819d000d35d296debe283db89b623b?narHash=sha256-CFXf8rcU%2BNekWtu5fkI8x7QF9uoeJyaiNo/bvKK/lyY%3D' (2026-04-03)
• Updated input 'fenix/rust-analyzer-src':
    'github:rust-lang/rust-analyzer/4eac290b58a70961e78f2e0c04f61a08b995b2cb?narHash=sha256-413aE%2Bfhubk1GA2v4IlRrpdZZzW/b89wJGuDfZCVtEs%3D' (2026-03-17)
  → 'github:rust-lang/rust-analyzer/9767050b2db436f5a770c5f91a548c88fd91ec71?narHash=sha256-jSw1C5MuyySiCpPgjdR%2BH0wPR3AgPRuylLunw%2Byd7A0%3D' (2026-04-03)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/f8573b9c935cfaa162dd62cc9e75ae2db86f85df?narHash=sha256-hpXH0z3K9xv0fHaje136KY872VT2T5uwxtezlAskQgY%3D' (2026-03-16)
  → 'github:NixOS/nixpkgs/8d8c1fa5b412c223ffa47410867813290cdedfef?narHash=sha256-J0dZU4atgcfo4QvM9D92uQ0Oe1eLTxBVXjJzdEMQpD0%3D' (2026-04-02)
• Updated input 'nixpkgs-latest-release':
    'github:NixOS/nixpkgs/fea3b367d61c1a6592bc47c72f40a9f3e6a53e96?narHash=sha256-GNU%2BooRmrHLfjlMsKdn0prEKVa0faVanm0jrgu1J/gY%3D' (2026-03-18)
  → 'github:NixOS/nixpkgs/bcd464ccd2a1a7cd09aa2f8d4ffba83b761b1d0e?narHash=sha256-d3Yx83vSrN%2B2z/loBh4mJpyRqr9aAJqlke4TkpFmRJA%3D' (2026-04-01)
• Updated input 'rust-overlay':
    'github:oxalica/rust-overlay/f17186f52e82ec5cf40920b58eac63b78692ac7c?narHash=sha256-GD6i1F2vrSxbsmbS92%2B8%2Bx3DbHOJ%2ByrS78Pm4xigW4M%3D' (2026-03-18)
  → 'github:oxalica/rust-overlay/199eeb6748116f7da4fbd3a680bc854e99d9132b?narHash=sha256-8ctPmj6RME4q4ELeg%2BBuY9lV/34M4AG1CNc0Im9PDDk%3D' (2026-04-03)

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

Author: ipetkov