Fix ci

Author: hadashiA

VContainer.Standalone/VContainer.Standalone.csproj

@@ -1,6 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
     <PropertyGroup>
         <TargetFramework>net8.0</TargetFramework>
+        <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     </PropertyGroup>
     <ItemGroup>
         <Compile Include="..\VContainer\Assets\VContainer\Runtime\**\*.cs"

VContainer/Assets/VContainer/Runtime/Internal/FreeList.cs

@@ -21,7 +21,7 @@ class FreeList<T> where T : class
     {
         public bool IsDisposed => lastIndex == -2;
 
-        readonly object gate = new();
+        readonly object gate = new object();
         T?[] values;
         int lastIndex = -1;