Bump cachix/install-nix-action from V27 to 30 (#33)

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

Author: dependabot[bot]

.github/workflows/formatting.yml

@@ -5,7 +5,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4.2.2
-      - uses: cachix/install-nix-action@V27
+      - uses: cachix/install-nix-action@v30
         with:
           extra_nix_config: |
             experimental-features = nix-command flakes
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4.2.2
-      - uses: cachix/install-nix-action@V27
+      - uses: cachix/install-nix-action@v30
         with:
           extra_nix_config: |
             experimental-features = nix-command flakes

.github/workflows/statix.yml

@@ -5,7 +5,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4.2.2
-      - uses: cachix/install-nix-action@V27
+      - uses: cachix/install-nix-action@v30
         with:
           extra_nix_config: |
             experimental-features = nix-command flakes