Update nix.yml to fix Mac runner cache

nix builds will behave correctly like this

.github/workflows/nix.yml

@@ -3,9 +3,6 @@ name: Build and cache with Nix
 on:
   workflow_dispatch:
   push:
-    paths-ignore:
-    - '.github/**'
-
 
 jobs:
   build-and-cache:
@@ -19,7 +16,7 @@ jobs:
       uses: actions/checkout@v3
 
     - name: Set up Nix with caching
-      uses: kadena-io/setup-nix-with-cache@v2
+      uses: kadena-io/setup-nix-with-cache/by-root@v3
       with:
         cache_url: s3://nixcache.chainweb.com?region=us-east-1
         signing_private_key: ${{ secrets.NIX_CACHE_PRIVATE_KEY }}
@@ -31,6 +28,9 @@ jobs:
         aws-secret-access-key: ${{ secrets.NIX_CACHE_AWS_SECRET_ACCESS_KEY }}
         aws-region: us-east-1
 
+    - name: Give root user AWS credentials
+      uses: kadena-io/setup-nix-with-cache/copy-root-aws-credentials@v3
+
     - name: Build and cache artifacts
       timeout-minutes: 740
       run: |