* Bump Testcontainers version to 4.5.0
The Testcontainers dependency Docker.DotNet was bumped to 3.128.1 and is not binary compatible with previous version.
When a user has a direct dependency on Testcontainers 4.5.0, WireMock.Net.Testcontainers fails with :
System.MissingMethodException : Method not found: 'Docker.DotNet.DockerClient Docker.DotNet.DockerClientConfiguration.CreateClient(System.Version)'
* Bump System.Net.Http.Json version to 8.0.1
Minimum required version for Testcontainers 4.5.0
* Do not dispose null container
