flake.lock: Update

[github-actions]

Automated changes by the update-flake-lock GitHub Action.

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/cbd8ec4de4469333c82ff40d057350c30e9f7d36?narHash=sha256-DjkQPnkAfd7eB522PwnkGhOMuT9QVCZspDpJJYyOj60%3D' (2025-01-05)
  → 'github:NixOS/nixpkgs/7105ae3957700a9646cc4b766f5815b23ed0c682?narHash=sha256-8XfURTDxOm6%2B33swQJu/hx6xw1Tznl8vJJN5HwVqckg%3D' (2025-03-20)
• 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/3900afffcd85198e3afab396fbf1d0abe5f76173?narHash=sha256-n2u6dnFGVUDfUBXR%2BxL%2Bk6A78JThMJc2rDjvWblReEY%3D' (2025-03-11)
• Updated input 'rpi-linux-6_12_17-src':
    'github:raspberrypi/linux/5985ce32e511f4e8279a841a1b06a8c7d972b386?narHash=sha256-hoCsGc4%2BRC/2LmxDtswLBL5ZhWlw4vSiL4Vkl39r2MU%3D' (2025-02-28)
  → 'github:raspberrypi/linux/fc2c8c582d4228c3e76b6d3bf7823e8fafcd80d7?narHash=sha256-yaAm0hm9UOSZrsjQktlko3kYqO28NfNPtlXK8xy%2BSSE%3D' (2025-03-20)
• Updated input 'rpi-linux-6_6_78-src':
    'github:raspberrypi/linux/2e071057fded90e789c0101498e45a1778be93fe?narHash=sha256-Y8%2Bot4Yi3UKwlZK3ap15rZZ16VZDvmeFkD46%2B6Ku7bE%3D' (2025-02-25)
  → 'github:raspberrypi/linux/9da8d6df2051478f0ba16d73c65995955c19cb3a?narHash=sha256-gTBchqL%2BoBACQ6582IN68d1/tn8ZOT4uGBOxO/5bMkY%3D' (2025-03-18)

Running GitHub Actions on this PR

GitHub Actions will not run workflows on pull requests which are opened by a GitHub Action.

To run GitHub Actions workflows on this PR, run:

git branch -D update_flake_lock_action
git fetch origin
git checkout update_flake_lock_action
git commit --amend --no-edit
git push origin update_flake_lock_action --force

[JamieMagee]

Build errors are due to kernel versions not matching. For example:

Error: modDirVersion 6.6.67 specified in the Nix expression is wrong, it should be: 6.6.78

We should lock rpi-linux-6_6_67-src and rpi-linux-6_12_11-src by commit ID instead of mutable tag (rpi-6.6.y and rpi-6.12.y)