disable parallel test execution on GitHub Actions macOS runners

Author: smdn

tests/Smdn.TPSmartHomeDevices.Kasa/Smdn.TPSmartHomeDevices.Kasa.Tests.csproj

@@ -4,6 +4,11 @@ SPDX-License-Identifier: MIT
 -->
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
+    <!-- disable parallel test execution on GitHub Actions macOS runners -->
+    <TestTfmsInParallel
+      Condition="'$(GITHUB_ACTIONS)' == 'true' and $([System.OperatingSystem]::IsMacOS())"
+    >false</TestTfmsInParallel>
+
     <TargetFrameworks Condition=" '$(EnableTargetFrameworkDotNet100)' == 'true' ">net10.0;$(TargetFrameworks)</TargetFrameworks>
     <TargetFrameworks Condition=" '$(EnableTargetFrameworkDotNet80)' == 'true' ">net8.0;$(TargetFrameworks)</TargetFrameworks>
     <TargetFrameworks Condition=" '$(EnableTargetFrameworkNetFx)' == 'true' ">$(TargetFrameworks)</TargetFrameworks>