build(deps): bump DeterminateSystems/magic-nix-cache-action

Bumps [DeterminateSystems/magic-nix-cache-action](https://github.com/determinatesystems/magic-nix-cache-action) from 9 to 13.
- [Release notes](https://github.com/determinatesystems/magic-nix-cache-action/releases)
- [Commits](DeterminateSystems/magic-nix-cache-action@v9...v13)

---
updated-dependencies:
- dependency-name: DeterminateSystems/magic-nix-cache-action
  dependency-version: '13'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/actions/install-nix/action.yml

@@ -11,7 +11,7 @@ runs:
     with:
       extra-conf: |
         accept-flake-config = true
-  - uses: DeterminateSystems/magic-nix-cache-action@v9
+  - uses: DeterminateSystems/magic-nix-cache-action@v13
   - uses: cachix/cachix-action@v16
     continue-on-error: true
     with: