Revert "Bump DeterminateSystems/nix-installer-action from 9 to 10 (#28)"

This reverts commit 9d33e80.

Author: sestrella

.github/workflows/publish.yml

@@ -28,7 +28,7 @@ jobs:
         with:
           ref: ${{ inputs.tag || github.ref_name }}
       - name: Install Nix
-        uses: DeterminateSystems/nix-installer-action@v10
+        uses: DeterminateSystems/nix-installer-action@v9
       - name: Publish flake
         uses: DeterminateSystems/flakehub-push@v3
         with: