Bump Testcontainers.RabbitMq from 4.7.0 to 4.8.1

---
updated-dependencies:
- dependency-name: Testcontainers.RabbitMq
  dependency-version: 4.8.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Rebus.RabbitMq.Tests/Rebus.RabbitMq.Tests.csproj

@@ -23,7 +23,7 @@
 		<PackageReference Include="RabbitMQ.Client" Version="7.1.2" />
 		<PackageReference Include="Microting.Rebus" Version="9.0.5" />
 		<PackageReference Include="Microting.Rebus.Tests.Contracts" Version="9.0.5" />
-		<PackageReference Include="Testcontainers.RabbitMq" Version="4.7.0" />
+		<PackageReference Include="Testcontainers.RabbitMq" Version="4.8.1" />
 	</ItemGroup>
 	<ItemGroup>
 		<Folder Include="Internals\" />