ci: pr.yml - fix cachix push

Signed-off-by: Reputable2722 <153411261+Reputable2772@users.noreply.github.com>

Author: Reputable2772

.github/workflows/pr.yml

@@ -59,6 +59,6 @@ jobs:
 
     - name: "Push to Cachix"
       run: |
-        nix develop .#ci --command bash -c "CACHIX_AUTH_TOKEN=${{ secrets.CACHIX_AUTH_TOKEN }} echo $(realpath result_new) | cachix push spearman4157"
+        nix develop .#ci --command bash -c "echo $(realpath result_new) | CACHIX_AUTH_TOKEN=${{ secrets.CACHIX_AUTH_TOKEN }}  cachix push spearman4157"
 
 # TODO: Flakes and Sources changelog from their respective git repositories.