fix(example): update opentelemetry package

Author: stratdev3

src/example/example.csproj

@@ -19,7 +19,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.14.0" />
+    <PackageReference Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.15.3" />
   </ItemGroup>
 
   <ItemGroup>