chore(deps): update determinatesystems/determinate-nix-action action to v3.18.0

Author: jhcloud-renovate[bot]

.github/workflows/mdbook.yml

@@ -32,7 +32,7 @@ jobs:
       - uses: actions/checkout@v6
 
       - name: Install Nix
-        uses: DeterminateSystems/determinate-nix-action@v3.17.3
+        uses: DeterminateSystems/determinate-nix-action@v3.18.0
       - uses: DeterminateSystems/magic-nix-cache-action@main
         with:
           use-flakehub: false

.github/workflows/validate.yml

@@ -41,7 +41,7 @@ jobs:
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
 
       - name: Install Nix
-        uses: DeterminateSystems/determinate-nix-action@v3.17.3
+        uses: DeterminateSystems/determinate-nix-action@v3.18.0
       - uses: DeterminateSystems/magic-nix-cache-action@main
         with:
           use-flakehub: false
@@ -87,7 +87,7 @@ jobs:
       - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
 
       - name: Install Nix
-        uses: DeterminateSystems/determinate-nix-action@v3.17.3
+        uses: DeterminateSystems/determinate-nix-action@v3.18.0
         with: &nix-extra-conf
           extra-conf: |
             extra-experimental-features = nix-command flakes external-builders
@@ -133,7 +133,7 @@ jobs:
         uses: jlumbroso/free-disk-space@54081f138730dfa15788a46383842cd2f914a1be # v1.3.1
 
       - name: Install Nix
-        uses: DeterminateSystems/determinate-nix-action@v3.17.3
+        uses: DeterminateSystems/determinate-nix-action@v3.18.0
         with: *nix-extra-conf
 
       - name: Re-authenticate with FlakeHub token