Merge pull request #1839 from haskell/dependabot/github_actions/cachix/install-nix-action-26

chore(deps): bump cachix/install-nix-action from 25 to 26

Author: purcell

.github/workflows/test.yml

@@ -28,7 +28,7 @@ jobs:
           - emacs_version: 29.1
             target: deploy-manual
     steps:
-    - uses: cachix/install-nix-action@v25
+    - uses: cachix/install-nix-action@v26
       with:
         nix_path: nixpkgs=channel:nixos-unstable
     - uses: purcell/setup-emacs@master