chore(deps): update cachix/install-nix-action action to v30

Author: renovate[bot]

.github/workflows/ci.yaml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v4
-    - uses: cachix/install-nix-action@v29
+    - uses: cachix/install-nix-action@v30
     - uses: cachix/cachix-action@v15
       with:
         name: pre-commit-hooks
@@ -24,7 +24,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v4
-    - uses: cachix/install-nix-action@v29
+    - uses: cachix/install-nix-action@v30
     - uses: cachix/cachix-action@v15
       with:
         name: pre-commit-hooks