Unify heartbeat interval to 60s across all test steps

Linux test steps were using the default 5s interval while Windows
used 60s. Standardize all 4 heartbeat invocations to 60s to reduce
log noise consistently.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: radical

.github/workflows/run-tests.yml

@@ -393,8 +393,8 @@ jobs:
           TestsRunningOutsideOfRepo: true
           TESTCONTAINERS_HUB_IMAGE_NAME_PREFIX: 'netaspireci.azurecr.io'
         run: |
-          # Start heartbeat monitor in background
-          ${{ github.workspace }}/${{ env.DOTNET_SCRIPT }} ${{ github.workspace }}/tools/scripts/Heartbeat.cs &
+          # Start heartbeat monitor in background (60s interval to reduce log noise)
+          ${{ github.workspace }}/${{ env.DOTNET_SCRIPT }} ${{ github.workspace }}/tools/scripts/Heartbeat.cs 60 &
           HEARTBEAT_PID=$!
 
           # Run tests
@@ -477,8 +477,8 @@ jobs:
           PLAYWRIGHT_INSTALLED: ${{ !inputs.enablePlaywrightInstall && 'false' || 'true' }}
           TESTCONTAINERS_HUB_IMAGE_NAME_PREFIX: 'netaspireci.azurecr.io'
         run: |
-          # Start heartbeat monitor in background
-          ${{ env.DOTNET_SCRIPT }} ${{ github.workspace }}/tools/scripts/Heartbeat.cs &
+          # Start heartbeat monitor in background (60s interval to reduce log noise)
+          ${{ env.DOTNET_SCRIPT }} ${{ github.workspace }}/tools/scripts/Heartbeat.cs 60 &
           HEARTBEAT_PID=$!
 
           # Run tests

tools/scripts/Heartbeat.cs

@@ -3,7 +3,7 @@
 // diagnose runner hangs and disk space issues during tests.
 //
 // Usage: dotnet tools/scripts/Heartbeat.cs [interval-seconds]
-// Default interval: 5 seconds
+// Default interval: 60 seconds
 //
 // Example: dotnet tools/scripts/Heartbeat.cs 10
 
@@ -16,7 +16,7 @@
          RuntimeInformation.IsOSPlatform(OSPlatform.Windows) ? "Windows" :
          throw new NotSupportedException("Unsupported OS platform");
 
-var intervalSeconds = args.Length > 0 && int.TryParse(args[0], out var parsed) ? parsed : 5;
+var intervalSeconds = args.Length > 0 && int.TryParse(args[0], out var parsed) ? parsed : 60;
 var cts = new CancellationTokenSource();
 
 Console.CancelKeyPress += (_, e) =>