Bump Confluent.Kafka from 2.0.2 to 2.2.0

Bumps [Confluent.Kafka](https://github.com/confluentinc/confluent-kafka-dotnet) from 2.0.2 to 2.2.0.
- [Release notes](https://github.com/confluentinc/confluent-kafka-dotnet/releases)
- [Changelog](https://github.com/confluentinc/confluent-kafka-dotnet/blob/master/CHANGELOG.md)
- [Commits](confluentinc/confluent-kafka-dotnet@v2.0.2...v2.2.0)

---
updated-dependencies:
- dependency-name: Confluent.Kafka
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

examples/WebExample/WebExample.csproj

@@ -7,7 +7,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="Confluent.Kafka" Version="2.0.2"/>
+        <PackageReference Include="Confluent.Kafka" Version="2.2.0"/>
         <PackageReference Include="OpenTelemetry.Exporter.Zipkin" Version="1.4.0"/>
         <PackageReference Include="OpenTelemetry.Extensions.Hosting" Version="1.4.0"/>
         <PackageReference Include="OpenTelemetry.Instrumentation.AspNetCore" Version="1.0.0-rc9.14"/>