build(deps): bump DeterminateSystems/magic-nix-cache-action from 6 to 7

Bumps [DeterminateSystems/magic-nix-cache-action](https://github.com/determinatesystems/magic-nix-cache-action) from 6 to 7.
- [Release notes](https://github.com/determinatesystems/magic-nix-cache-action/releases)
- [Commits](DeterminateSystems/magic-nix-cache-action@v6...v7)

---
updated-dependencies:
- dependency-name: DeterminateSystems/magic-nix-cache-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/build.yaml

@@ -27,7 +27,7 @@ jobs:
         uses: pre-commit/action@v3.0.1
 
       - uses: DeterminateSystems/nix-installer-action@v11
-      - uses: DeterminateSystems/magic-nix-cache-action@v6
+      - uses: DeterminateSystems/magic-nix-cache-action@v7
       - run: nix flake check
 
   build:
@@ -50,7 +50,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: DeterminateSystems/nix-installer-action@v11
-      - uses: DeterminateSystems/magic-nix-cache-action@v6
+      - uses: DeterminateSystems/magic-nix-cache-action@v7
       - run: nix build
 
   submit-hash-update-pr:
@@ -66,7 +66,7 @@ jobs:
           repository: nevarro-space/infrastructure
 
       - uses: DeterminateSystems/nix-installer-action@v11
-      - uses: DeterminateSystems/magic-nix-cache-action@v6
+      - uses: DeterminateSystems/magic-nix-cache-action@v7
 
       - name: Update the mineshspc input
         run: |