[nongnu] elpa/nix-mode 2a24b400b6 485/500: chore: Bump install-nix-action to v14.1

[ELPA Syncer]

branch: elpa/nix-mode
commit 2a24b400b656e2868fbe8521cd9faae95935e8fc
Author: Akira Komamura <akira.komamura@gmail.com>
Commit: Akira Komamura <akira.komamura@gmail.com>

    chore: Bump install-nix-action to v14.1
    
    Based on the comment by Domen Kožar (@domenkozar) at
    https://github.com/NixOS/nix-mode/pull/140#issuecomment-964307859
    
    Co-authored-by: Domen Kožar <domen@dev.si>
---
 .github/workflows/test.yml | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 76622ab60e..a67ac9e34b 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -7,12 +7,16 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest]
+        nixpkgs_channel:
+        - nixos-unstable
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v2
       with:
         fetch-depth: 0
-    - uses: cachix/install-nix-action@v12
+    - uses: cachix/install-nix-action@v14.1
+      with:
+        nix_path: nixpkgs=channel:${{ matrix.nixpkgs_channel }}
     #- run: nix build
     - run: nix-build -E '(import ./.).defaultPackage.${builtins.currentSystem}'
     #- run: nix flake check