only run nighly in the core repository

Author: jmartin-tech

.github/workflows/nightly.yml

@@ -6,15 +6,12 @@ on:
   workflow_dispatch:
 
 jobs:
-  linux:
-    name: Nightly Linux
-    uses: ./.github/workflows/test_linux.yml
-  windows:
-    name: Nightly Windows
-    uses: ./.github/workflows/test_windows.yml
-  macos:
-    name: Nightly MacOS
-    uses: ./.github/workflows/test_macos.yml
+  nightly:
+    name: Nightly Pytest
+    - uses: ./.github/workflows/test_linux.yml
+    - uses: ./.github/workflows/test_windows.yml
+    - uses: ./.github/workflows/test_macos.yml
   package_test:
     name: Nightly Packaging
+    if: github.repository_owner == 'NVIDIA'
     uses: ./.github/workflows/remote_package_install.yml