Bump cachix/install-nix-action from 25 to 30 (#11)

Bumps [cachix/install-nix-action](https://github.com/cachix/install-nix-action) from 25 to 30.
- [Release notes](https://github.com/cachix/install-nix-action/releases)
- [Commits](cachix/install-nix-action@v25...v30)

---
updated-dependencies:
- dependency-name: cachix/install-nix-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/flake_update.yaml

@@ -13,7 +13,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install nix
-        uses: cachix/install-nix-action@v25
+        uses: cachix/install-nix-action@v30
         with:
           install_url: https://releases.nixos.org/nix/nix-2.24.10/install
 

.github/workflows/release.yaml

@@ -19,7 +19,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install nix
-        uses: cachix/install-nix-action@v27
+        uses: cachix/install-nix-action@v30
         with:
           install_url: https://releases.nixos.org/nix/nix-2.24.10/install
 

.github/workflows/test.yaml

@@ -17,7 +17,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Install nix
-        uses: cachix/install-nix-action@v27
+        uses: cachix/install-nix-action@v30
         with:
           install_url: https://releases.nixos.org/nix/nix-2.24.10/install