Merge pull request #232 from JoshKeegan/dependabot/nuget/xunit.core-2.7.0

Author: dependabot[bot]

src/xRetry/xRetry.csproj

@@ -8,7 +8,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="xunit.core" Version="2.6.6" />
+    <PackageReference Include="xunit.core" Version="2.7.0" />
   </ItemGroup>
 
 </Project>