chore: bump cachix/cachix-action from 11 to 12 (#121)

Bumps [cachix/cachix-action](https://github.com/cachix/cachix-action) from 11 to 12.
- [Release notes](https://github.com/cachix/cachix-action/releases)
- [Commits](cachix/cachix-action@v11...v12)

---
updated-dependencies:
- dependency-name: cachix/cachix-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

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

.github/workflows/build-docker-image.yaml

@@ -42,7 +42,7 @@ jobs:
         path: /nix
         key: nix-build-${{ matrix.platform }}-${{ hashFiles('**/*.nix') }}
 
-    - uses: cachix/cachix-action@v11
+    - uses: cachix/cachix-action@v12
       with:
         name: hasura-storage
         authToken: ${{ secrets.CACHIX_AUTH_TOKEN }}

.github/workflows/test.yaml

@@ -30,7 +30,7 @@ jobs:
         path: /nix
         key: nix-${{ runner.os }}-${{ hashFiles('**/*.nix') }}
 
-    - uses: cachix/cachix-action@v11
+    - uses: cachix/cachix-action@v12
       with:
         name: hasura-storage
         authToken: ${{ secrets.CACHIX_AUTH_TOKEN }}