fix: try to set nix-version

Author: samrose

.github/workflows/nix-build.yml

@@ -66,6 +66,7 @@ jobs:
         uses: DeterminateSystems/nix-installer-action@main
         if: ${{ github.secret_source == 'Actions' }}
         with:
+          nix_version: 2.24.9
           extra-conf: |
             substituters = https://cache.nixos.org https://nix-postgres-artifacts.s3.amazonaws.com
             trusted-public-keys = nix-postgres-artifacts:dGZlQOvKcNEjvT7QEAJbcV6b6uk7VF/hWMjhYleiaLI=% cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY=
@@ -74,6 +75,7 @@ jobs:
         uses: DeterminateSystems/nix-installer-action@main
         if: ${{ github.secret_source == 'None' }}
         with:
+          nix_version: 2.24.9
           extra-conf: |
             substituters = https://cache.nixos.org https://nix-postgres-artifacts.s3.amazonaws.com
             trusted-public-keys = nix-postgres-artifacts:dGZlQOvKcNEjvT7QEAJbcV6b6uk7VF/hWMjhYleiaLI=% cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY=