Bump OpenTracing from 0.12.0 to 0.12.1 (#21)

Bumps [OpenTracing](https://github.com/opentracing/opentracing-csharp) from 0.12.0 to 0.12.1.
- [Release notes](https://github.com/opentracing/opentracing-csharp/releases)
- [Commits](opentracing/opentracing-csharp@0.12.0...0.12.1)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

src/Petabridge.Tracing.ApplicationInsights/Petabridge.Tracing.ApplicationInsights.csproj

@@ -14,7 +14,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.ApplicationInsights" Version="2.7.2" />
-    <PackageReference Include="OpenTracing" Version="0.12.0" />
+    <PackageReference Include="OpenTracing" Version="0.12.1" />
   </ItemGroup>
 
 </Project>