flake.lock: Update

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/cbd8ec4de4469333c82ff40d057350c30e9f7d36?narHash=sha256-DjkQPnkAfd7eB522PwnkGhOMuT9QVCZspDpJJYyOj60%3D' (2025-01-05)
  → 'github:NixOS/nixpkgs/20755fa05115c84be00b04690630cb38f0a203ad?narHash=sha256-ri1e8ZliWS3Jnp9yqpKApHaOo7KBN33W8ECAKA4teAQ%3D' (2025-03-07)
• Updated input 'rpi-bluez-firmware-src':
    'github:RPi-Distro/bluez-firmware/78d6a07730e2d20c035899521ab67726dc028e1c?narHash=sha256-KakKnOBeWxh0exu44beZ7cbr5ni4RA9vkWYb9sGMb8Q%3D' (2024-02-26)
  → 'github:RPi-Distro/bluez-firmware/2bbfb8438e824f5f61dae3f6ebb367a6129a4d63?narHash=sha256-t%2BD4VUfEIov83KV4wiKp6TqXTHXGkxg/mANi4GW7QHs%3D' (2025-03-03)
• Updated input 'rpi-firmware-nonfree-src':
    'github:RPi-Distro/firmware-nonfree/4b356e134e8333d073bd3802d767a825adec3807?narHash=sha256-T7eTKXqY9cxEMdab8Snda4CEOrEihy5uOhA6Fy%2BMhnw%3D' (2024-08-10)
  → 'github:RPi-Distro/firmware-nonfree/69377e5ff9530fc27bcd5bd63198843e06491312?narHash=sha256-D1ba93e2xsOFcdTV9FXjKU1NKKBSu5ekmGwCtxdiJ8c%3D' (2025-03-07)
• Updated input 'rpi-linux-6_12_17-src':
    'github:raspberrypi/linux/5985ce32e511f4e8279a841a1b06a8c7d972b386?narHash=sha256-hoCsGc4%2BRC/2LmxDtswLBL5ZhWlw4vSiL4Vkl39r2MU%3D' (2025-02-28)
  → 'github:raspberrypi/linux/d7a6e253b2a21e92fe53115b24bd27fa0ecdc843?narHash=sha256-47uhmoCZDwp8otGQiOJ0w0e8aTIQlCrrThLlAUw6eJo%3D' (2025-03-07)
• Updated input 'rpi-linux-6_6_78-src':
    'github:raspberrypi/linux/2e071057fded90e789c0101498e45a1778be93fe?narHash=sha256-Y8%2Bot4Yi3UKwlZK3ap15rZZ16VZDvmeFkD46%2B6Ku7bE%3D' (2025-02-25)
  → 'github:raspberrypi/linux/3c21211667e35029054b0dfebdf292e4e7d5754b?narHash=sha256-7IzfI4Do2P0rlQ51URMkEyMBu4mlUCxZJGbqg4bIL70%3D' (2025-03-07)

Author: github-actions[bot]