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] <support@github.com>

.github/workflows/darwin.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: macos-13
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v29
+      - uses: cachix/install-nix-action@v30
         with:
           extra_nix_config: |
             accept-flake-config = true
@@ -29,7 +29,7 @@ jobs:
       - flake-check
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v29
+      - uses: cachix/install-nix-action@v30
         with:
           extra_nix_config: |
             accept-flake-config = true
@@ -48,7 +48,7 @@ jobs:
       - flake-check
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v29
+      - uses: cachix/install-nix-action@v30
         with:
           extra_nix_config: |
             accept-flake-config = true

.github/workflows/linux.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v29
+      - uses: cachix/install-nix-action@v30
         with:
           extra_nix_config: |
             accept-flake-config = true
@@ -23,7 +23,7 @@ jobs:
       - flake-check
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v29
+      - uses: cachix/install-nix-action@v30
         with:
           extra_nix_config: |
             accept-flake-config = true
@@ -45,7 +45,7 @@ jobs:
         with:
           tool-cache: true
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v29
+      - uses: cachix/install-nix-action@v30
         with:
           extra_nix_config: |
             accept-flake-config = true
@@ -67,7 +67,7 @@ jobs:
         with:
           tool-cache: true
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v29
+      - uses: cachix/install-nix-action@v30
         with:
           extra_nix_config: |
             accept-flake-config = true