chore(deps): bump cachix/install-nix-action from 29 to 30

Bumps [cachix/install-nix-action](https://github.com/cachix/install-nix-action) from 29 to 30.
- [Release notes](https://github.com/cachix/install-nix-action/releases)
- [Commits](cachix/install-nix-action@v29...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]>

.github/workflows/nix_smoke.yaml

@@ -17,7 +17,7 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v4
       - name: Install Nix
-        uses: cachix/install-nix-action@v29
+        uses: cachix/install-nix-action@v30
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}

.github/workflows/regression_reusable.yaml

@@ -71,7 +71,7 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v4
       - name: Install Nix
-        uses: cachix/install-nix-action@v29
+        uses: cachix/install-nix-action@v30
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GH_TOKEN }}

.github/workflows/upgrade_reusable.yaml

@@ -26,7 +26,7 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v4
       - name: Install Nix
-        uses: cachix/install-nix-action@v29
+        uses: cachix/install-nix-action@v30
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GH_TOKEN }}