Disable workflows from running on PRs

Author: nitins17

.github/workflows/build_artifacts.yml

@@ -1,9 +1,9 @@
 name: Build JAX Artifacts
 
 on:
-  pull_request:
-    branches:
-      - main
+  # pull_request:
+  #   branches:
+  #     - main
   workflow_dispatch:
     inputs:
       halt-for-connection:

.github/workflows/pytest_gpu.yml

@@ -1,9 +1,9 @@
 name: Run Pytest GPU tests
 
 on:
-  pull_request:
-    branches:
-      - main
+  # pull_request:
+  #   branches:
+  #     - main
   workflow_dispatch:
     inputs:
       halt-for-connection: