Update flake.lock for release-24.11 (#151)

Automated changes by the
[update-flake-lock](https://github.com/DeterminateSystems/update-flake-lock)
GitHub Action.

```
Flake lock file updates:

• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/0b73e36b1962620a8ac551a37229dd8662dac5c8?narHash=sha256-wjWLzdM7PIq4ZAe7k3vyjtgVJn6b0UeodtRFlM/6W5U%3D' (2025-02-13)
  → 'github:NixOS/nixpkgs/a60651b217d2e529729cbc7d989c19f3941b9250?narHash=sha256-f84lBmLl4tkDp1ZU5LBTSFzlxXP4926DVW3KnXrke10%3D' (2025-02-15)
```

### 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:

```sh
git branch -D update/flake/release-24.11
git fetch origin
git checkout update/flake/release-24.11
git commit --amend --no-edit
git push origin update/flake/release-24.11 --force
```

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