fix: nix step parameters

Author: jfroche

.github/workflows/ami-release-nix.yml

@@ -46,11 +46,6 @@ jobs:
     steps:
       - name: Checkout Repo
         uses: supabase/postgres/.github/actions/shared-checkout@HEAD
-        with:
-          push-to-cache: 'true'
-        env:
-          DEV_AWS_ROLE: ${{ secrets.DEV_AWS_ROLE }}
-          NIX_SIGN_SECRET_KEY: ${{ secrets.NIX_SIGN_SECRET_KEY }}
 
       - name: aws-creds
         uses: aws-actions/configure-aws-credentials@v4
@@ -62,6 +57,11 @@ jobs:
 
       - name: Install nix
         uses: ./.github/actions/nix-install-ephemeral
+        with:
+          push-to-cache: 'true'
+        env:
+          DEV_AWS_ROLE: ${{ secrets.DEV_AWS_ROLE }}
+          NIX_SIGN_SECRET_KEY: ${{ secrets.NIX_SIGN_SECRET_KEY }}
 
       - name: Run checks if triggered manually
         if: ${{ github.event_name == 'workflow_dispatch' }}