Bump cron job timing to every 30 minutes

This will work for now since the tests are fast, I'll eventually need to load balance it better.

Author: llvm-beanz

.github/workflows/macos-clang-mtl.yaml

@@ -6,7 +6,7 @@ permissions:
 
 on:
   schedule:
-    - cron: '0 */2 * * *' # run every 2 hours
+    - cron: '0,30 * * * *' # run every 30 minutes
 
 jobs:
   macOS-Metal-Clang:

.github/workflows/macos-dxc-mtl.yaml

@@ -6,7 +6,7 @@ permissions:
 
 on:
   schedule:
-    - cron: '0 */2 * * *' # run every 2 hours
+    - cron: '0,30 * * * *' # run every 30 minutes
 
 jobs:
   macOS-Metal-DXC:

.github/workflows/windows-intel-clang-d3d12.yaml

@@ -6,7 +6,7 @@ permissions:
 
 on:
   schedule:
-    - cron: '0 */2 * * *' # run every 12 hours
+    - cron: '0,30 * * * *' # run every 30 minutes
 
 jobs:
   Windows-D3D12-Intel-Clang:

.github/workflows/windows-intel-clang-vk.yaml

@@ -6,7 +6,7 @@ permissions:
 
 on:
   schedule:
-    - cron: '0 */2 * * *' # run every 12 hours
+    - cron: '0,30 * * * *' # run every 30 minutes
 
 jobs:
   Windows-VK-Intel-Clang:

.github/workflows/windows-intel-clang-warp-d3d12.yaml

@@ -6,7 +6,7 @@ permissions:
 
 on:
   schedule:
-    - cron: '0 */2 * * *' # run every 12 hours
+    - cron: '0,30 * * * *' # run every 30 minutes
 
 jobs:
   Windows-D3D12-Warp-Clang:

.github/workflows/windows-intel-dxc-d3d12.yaml

@@ -6,7 +6,7 @@ permissions:
 
 on:
   schedule:
-    - cron: '0 */2 * * *' # run every 2 hours
+    - cron: '0,30 * * * *' # run every 30 minutes
 
 jobs:
   Windows-D3D12-Intel-DXC:

.github/workflows/windows-intel-dxc-vk.yaml

@@ -6,7 +6,7 @@ permissions:
 
 on:
   schedule:
-    - cron: '0 */2 * * *' # run every 2 hours
+    - cron: '0,30 * * * *' # run every 30 minutes
 
 jobs:
   Windows-VK-Intel-DXC:

.github/workflows/windows-intel-dxc-warp-d3d12.yaml

@@ -6,7 +6,7 @@ permissions:
 
 on:
   schedule:
-    - cron: '0 */2 * * *' # run every 2 hours
+    - cron: '0,30 * * * *' # run every 30 minutes
 
 jobs:
   Windows-D3D12-Warp-DXC: