Release v3.11.2 (#1668)

* Prepare release v3.11.2

* Update test fixtures with the new nix-installer version

* flake.lock: Update

Flake lock file updates:

• Updated input 'determinate':
    'https://api.flakehub.com/f/pinned/DeterminateSystems/determinate/3.11.1/01991762-b4e5-7a3b-8bfc-5d0f1ed4965e/source.tar.gz?narHash=sha256-BLUHtWWoHFR6UJJJwkmivSv7RTjo92wlT0Y7kbCd2MY%3D' (2025-09-05)
  → 'https://api.flakehub.com/f/pinned/DeterminateSystems/determinate/3.11.2/01993f0b-1215-7072-ac1a-f2b27b566115/source.tar.gz?narHash=sha256-iOOoVdrkcyk95Xg68TuPeAwpz%2Bv80mgZCqil0jpPZuY%3D' (2025-09-12)
• Updated input 'determinate/determinate-nixd-aarch64-darwin':
    'https://install.determinate.systems/determinate-nixd/tag/v3.11.1/macOS?narHash=sha256-Dym4kTLMTxAxNyZcrHRKRVMBINQPA7qgr%2B7dHozNrps%3D'
  → 'https://install.determinate.systems/determinate-nixd/tag/v3.11.2/macOS?narHash=sha256-q1tqDvmfjDgLk/wbYf4pRhyHDS94iY85Q79FPBtcv7g%3D'
• Updated input 'determinate/determinate-nixd-aarch64-linux':
    'https://install.determinate.systems/determinate-nixd/tag/v3.11.1/aarch64-linux?narHash=sha256-eYVSpk%2Bly2YRSYvgT47ABmFRwG0DliNO/8ntBkoRmjI%3D'
  → 'https://install.determinate.systems/determinate-nixd/tag/v3.11.2/aarch64-linux?narHash=sha256-E1vGfcQ5dqtRG9EDP6eOQWCnCIRB2XFkFBp2C4FgQ8c%3D'
• Updated input 'determinate/determinate-nixd-x86_64-linux':
    'https://install.determinate.systems/determinate-nixd/tag/v3.11.1/x86_64-linux?narHash=sha256-ZvRoKG/v0WS2XrDgkV%2B/hq3ARGokGisyelncKwlefvk%3D'
  → 'https://install.determinate.systems/determinate-nixd/tag/v3.11.2/x86_64-linux?narHash=sha256-GtxtkI0cOC2A30Xw6gCDTN7JxN1zJGh7/eIXr6AlTSA%3D'
• Updated input 'nix':
    'https://api.flakehub.com/f/pinned/DeterminateSystems/nix-src/3.11.1/01991737-661d-7932-b7c9-d3a0499b4c3f/source.tar.gz?narHash=sha256-/XtKs/hpYXJPeT3WppFVFZH1WvPDmeTt11hMWt/Bwas%3D' (2025-09-04)
  → 'https://api.flakehub.com/f/pinned/DeterminateSystems/nix-src/3.11.2/01993ee9-f8e7-7b80-80df-ec0a20a32514/source.tar.gz?narHash=sha256-3Ia%2By7Hbwnzcuf1hyuVnFtbnSR6ErQeFjemHdVxjCNE%3D' (2025-09-12)

* Update Cargo dependencies

* Set Cargo.toml package.version to 3.11.2

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Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]