chore(deps): bump cachix/install-nix-action from 18 to 23

Bumps [cachix/install-nix-action](https://github.com/cachix/install-nix-action) from 18 to 23.
- [Release notes](https://github.com/cachix/install-nix-action/releases)
- [Commits](https://github.com/cachix/install-nix-action/compare/v18...v23)

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

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/cachix.yml

@@ -34,7 +34,7 @@ jobs:
       - uses: actions/checkout@v4
         name: Checkout
 
-      - uses: cachix/install-nix-action@v20
+      - uses: cachix/install-nix-action@v23
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}

.github/workflows/check-docs.yml

@@ -26,7 +26,7 @@ jobs:
           remove-dotnet: true
           remove-haskell: true
 
-      - uses: cachix/install-nix-action@v20
+      - uses: cachix/install-nix-action@v23
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}

.github/workflows/check.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v20
+      - uses: cachix/install-nix-action@v23
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -26,7 +26,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v20
+      - uses: cachix/install-nix-action@v23
         with:
           install_url: https://nixos.org/nix/install
           extra_nix_config: |

.github/workflows/manual.yml

@@ -27,7 +27,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install Nix
-        uses: cachix/install-nix-action@v18
+        uses: cachix/install-nix-action@v23
 
       - name: Build
         run: |