Bump RabbitMQ.Client from 6.8.1 to 7.0.0 in /tracer/dependabot

Bumps [RabbitMQ.Client](https://github.com/rabbitmq/rabbitmq-dotnet-client) from 6.8.1 to 7.0.0.
- [Release notes](https://github.com/rabbitmq/rabbitmq-dotnet-client/releases)
- [Changelog](https://github.com/rabbitmq/rabbitmq-dotnet-client/blob/main/CHANGELOG.md)
- [Commits](rabbitmq/rabbitmq-dotnet-client@v6.8.1...v7.0.0)

---
updated-dependencies:
- dependency-name: RabbitMQ.Client
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

tracer/dependabot/Datadog.Dependabot.Integrations.csproj

@@ -261,7 +261,7 @@
     <!-- Integration: RabbitMQ.Client -->
     <!--    Assembly: RabbitMQ.Client -->
     <!-- Latest package https://www.nuget.org/packages/RabbitMQ.Client/7.0.0 -->
-    <PackageReference Include="RabbitMQ.Client" Version="6.8.1" />
+    <PackageReference Include="RabbitMQ.Client" Version="7.0.0" />
 
     <!-- Integration: WebDriver -->
     <!--    Assembly: WebDriver -->