flake.lock: Update
Flake lock file updates:
• Updated input 'haskell-nix':
'github:input-output-hk/haskell.nix/cad2645' (2026-01-03)
→ 'github:input-output-hk/haskell.nix/962394c' (2026-02-07)
• Updated input 'haskell-nix/hackage':
'github:input-output-hk/hackage.nix/05797dd' (2026-01-03)
→ 'github:input-output-hk/hackage.nix/5e6caa6' (2026-02-07)
• Updated input 'haskell-nix/hackage-for-stackage':
'github:input-output-hk/hackage.nix/fba3874' (2026-01-03)
→ 'github:input-output-hk/hackage.nix/5fcc92e' (2026-02-07)
• Added input 'haskell-nix/hls-2.12':
'github:haskell/haskell-language-server/7d983de' (2025-09-24)
• Updated input 'haskell-nix/iserv-proxy':
'github:stable-haskell/iserv-proxy/1506051' (2025-08-15)
→ 'github:stable-haskell/iserv-proxy/91ef7ff' (2026-02-04)
• Updated input 'haskell-nix/stackage':
'github:input-output-hk/stackage.nix/8a7333a' (2026-01-03)
→ 'github:input-output-hk/stackage.nix/9d52557' (2026-02-07)