use parameterized $(xUnitVersion)

Dapper.Tests.Contrib/Dapper.Tests.Contrib.csproj

@@ -19,8 +19,8 @@
     <PackageReference Include="Microsoft.Data.Sqlite" Version="2.2.6" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.2.0" />
     <PackageReference Include="MySqlConnector" Version="0.56.0" />
-    <PackageReference Include="xunit" Version="2.4.1" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.1">
+    <PackageReference Include="xunit" Version="$(xUnitVersion)" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="$(xUnitVersion)">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>

Dapper.Tests/Dapper.Tests.csproj

@@ -49,8 +49,8 @@
     <PackageReference Include="MySqlConnector" Version="0.56.0" />
     <PackageReference Include="Npgsql" Version="4.0.9" />
     <PackageReference Include="System.ValueTuple" Version="4.5.0" />
-    <PackageReference Include="xunit" Version="2.4.1" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.1">
+    <PackageReference Include="xunit" Version="$(xUnitVersion)" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="$(xUnitVersion)">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>

Directory.build.props

@@ -17,7 +17,7 @@
     <DebugType>embedded</DebugType>
     <DefaultLanguage>en-US</DefaultLanguage>
     <IncludeSymbols>false</IncludeSymbols>
-    <xUnitVersion>2.4.1-pre.build.4059</xUnitVersion>
+    <xUnitVersion>2.4.1</xUnitVersion>
   </PropertyGroup>
 
   <ItemGroup Condition="'$(TargetFramework)' == 'net451'">