build(deps): bump cachix/install-nix-action from V27 to 28 (#24)

Bumps [cachix/install-nix-action](https://github.com/cachix/install-nix-action) from V27 to 28. This release includes the previously tagged commit.
- [Release notes](https://github.com/cachix/install-nix-action/releases)
- [Commits](cachix/install-nix-action@V27...V28)

---
updated-dependencies:
- dependency-name: cachix/install-nix-action
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/nix-check.yaml

@@ -12,7 +12,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install Nix ❄
-        uses: cachix/install-nix-action@V27
+        uses: cachix/install-nix-action@V28
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
 
@@ -35,7 +35,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install Nix ❄
-        uses: cachix/install-nix-action@V27
+        uses: cachix/install-nix-action@V28
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
 

.github/workflows/ship.yaml

@@ -17,7 +17,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install Nix ❄
-        uses: cachix/install-nix-action@V27
+        uses: cachix/install-nix-action@V28
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
 
@@ -64,7 +64,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install Nix ❄
-        uses: cachix/install-nix-action@V27
+        uses: cachix/install-nix-action@V28
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}