Merge pull request #708 from microsoft/dependabot/nuget/Verify-15.2.0

Bump Verify from 14.14.1 to 15.2.0

Author: darrelmiller

test/Microsoft.OpenApi.Tests/Microsoft.OpenApi.Tests.csproj

@@ -19,7 +19,7 @@
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="SharpYaml" Version="1.8.0" />
-    <PackageReference Include="Verify" Version="14.14.1" />
+    <PackageReference Include="Verify" Version="15.2.0" />
     <PackageReference Include="Verify.Xunit" Version="14.14.1" />
     <PackageReference Include="xunit" Version="2.4.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3">