Release v3.9.0 (#119)

* Prepare release v3.9.0

* Update determinate-nixd binaries to v3.9.0

* flake.lock: Update

Flake lock file updates:

• Updated input 'determinate-nixd-aarch64-darwin':
    'https://install.determinate.systems/determinate-nixd/tag/v3.8.6/macOS?narHash=sha256-TXc1t7wbUtzwyytrZMR9SoTsUdoXatDf45aoNndaonY%3D'
  → 'https://install.determinate.systems/determinate-nixd/tag/v3.9.0/macOS?narHash=sha256-kWLp/EAIfd6poQiNmhF4ZQ4DFQ%2ByjywEP5Pb42lJ1ZA%3D'
• Updated input 'determinate-nixd-aarch64-linux':
    'https://install.determinate.systems/determinate-nixd/tag/v3.8.6/aarch64-linux?narHash=sha256-MaD8woffmbfytD/1Ism5xLhonTlCzXyTU6TmVpin2vU%3D'
  → 'https://install.determinate.systems/determinate-nixd/tag/v3.9.0/aarch64-linux?narHash=sha256-C6zR/6prioMqNGaCK1aWywV/UXxVpQJzhuIusNwbL2Q%3D'
• Updated input 'determinate-nixd-x86_64-linux':
    'https://install.determinate.systems/determinate-nixd/tag/v3.8.6/x86_64-linux?narHash=sha256-cAXTuExL/7cmdzXM0vJLuHvExpjmv39%2BvWwgJyKbZnA%3D'
  → 'https://install.determinate.systems/determinate-nixd/tag/v3.9.0/x86_64-linux?narHash=sha256-wUh/TEjTXxSKjrSfUpS0I/1eZOnKF7B%2BWCZIZ2sHMDE%3D'
• Updated input 'nix':
    'https://api.flakehub.com/f/pinned/DeterminateSystems/nix-src/3.8.6/0198c717-3128-706c-95f8-49294f65c4b7/source.tar.gz?narHash=sha256-aHMByu8/6cJsUYffUgM4DnZRiLfBpQM0C9Wa3dCJ87o%3D' (2025-08-20)
  → 'https://api.flakehub.com/f/pinned/DeterminateSystems/nix-src/3.9.0/0198e84c-ab87-7b82-9f1b-2c6f38e00c5e/source.tar.gz?narHash=sha256-YHp0kpAUK%2B4tWoeMnwkRIL3WxOGVDvFBHqgNuxDGBwc%3D' (2025-08-26)
• Updated input 'nixpkgs':
    'https://api.flakehub.com/f/pinned/DeterminateSystems/nixpkgs-weekly/0.1.844992%2Brev-32f313e49e42f715491e1ea7b306a87c16fe0388/0198c0d5-28e5-7154-af57-79569c924644/source.tar.gz?narHash=sha256-nNaeJjo861wFR0tjHDyCnHs1rbRtrMgxAKMoig9Sj/w%3D' (2025-08-15)
  → 'https://api.flakehub.com/f/pinned/DeterminateSystems/nixpkgs-weekly/0.1.851377%2Brev-c53baa6685261e5253a1c355a1b322f82674a824/0198e4e2-01b1-7863-9802-c21a619ebe72/source.tar.gz?narHash=sha256-R94HxJBi%2BRK1iCm8Y4Q9pdrHZl0GZoDPIaYwjxRNPh4%3D' (2025-08-25)

---------

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

Author: github-actions[bot]

flake.lock

@@ -6,15 +6,15 @@
     nixpkgs.url = "https://flakehub.com/f/DeterminateSystems/nixpkgs-weekly/0.1";
 
     determinate-nixd-aarch64-linux = {
-      url = "https://install.determinate.systems/determinate-nixd/tag/v3.8.6/aarch64-linux";
+      url = "https://install.determinate.systems/determinate-nixd/tag/v3.9.0/aarch64-linux";
       flake = false;
     };
     determinate-nixd-x86_64-linux = {
-      url = "https://install.determinate.systems/determinate-nixd/tag/v3.8.6/x86_64-linux";
+      url = "https://install.determinate.systems/determinate-nixd/tag/v3.9.0/x86_64-linux";
       flake = false;
     };
     determinate-nixd-aarch64-darwin = {
-      url = "https://install.determinate.systems/determinate-nixd/tag/v3.8.6/macOS";
+      url = "https://install.determinate.systems/determinate-nixd/tag/v3.9.0/macOS";
       flake = false;
     };
     determinate-nixd-x86_64-darwin.follows = "determinate-nixd-aarch64-darwin";