Bump CloudNative.CloudEvents.Kafka, CloudNative.CloudEvents and Confl…

…uent.Kafka

Bumps [CloudNative.CloudEvents.Kafka](https://github.com/cloudevents/sdk-csharp), [CloudNative.CloudEvents](https://github.com/cloudevents/sdk-csharp) and [Confluent.Kafka](https://github.com/confluentinc/confluent-kafka-dotnet). These dependencies needed to be updated together.

Updates `CloudNative.CloudEvents.Kafka` from 2.7.1 to 2.8.0
- [Release notes](https://github.com/cloudevents/sdk-csharp/releases)
- [Changelog](https://github.com/cloudevents/sdk-csharp/blob/main/docs/changes-since-1x.md)
- [Commits](cloudevents/sdk-csharp@v2.7.1...v2.8.0)

Updates `CloudNative.CloudEvents` from 2.7.1 to 2.8.0
- [Release notes](https://github.com/cloudevents/sdk-csharp/releases)
- [Changelog](https://github.com/cloudevents/sdk-csharp/blob/main/docs/changes-since-1x.md)
- [Commits](cloudevents/sdk-csharp@v2.7.1...v2.8.0)

Updates `Confluent.Kafka` from 1.9.0 to 1.9.3
- [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@v1.9.0...v1.9.3)

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

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

src/Motor.Extensions.Hosting.Kafka/Motor.Extensions.Hosting.Kafka.csproj

@@ -5,8 +5,8 @@
 	</PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="Confluent.Kafka" Version="1.9.0" />
-        <PackageReference Include="CloudNative.CloudEvents.Kafka" Version="2.7.1" />
+        <PackageReference Include="Confluent.Kafka" Version="1.9.3" />
+        <PackageReference Include="CloudNative.CloudEvents.Kafka" Version="2.8.0" />
         <PackageReference Include="CloudNative.CloudEvents.SystemTextJson" Version="2.7.1" />
         <PackageReference Include="Microsoft.Extensions.Options" Version="8.0.2" />
         <PackageReference Include="Microsoft.Extensions.Options.ConfigurationExtensions" Version="8.0.0" />