ProviderStates fail to deserialise

[NicoLoco]

pact-workshop-dotnet/Provider/tests/Middleware/ProviderStateMiddleware.cs

Line 94 in 04bfa63

var providerState = JsonSerializer.Deserialize<ProviderState>(jsonRequestBody);

Fails to deserialize due to casing

var providerState = JsonSerializer.Deserialize(jsonRequestBody, new JsonSerializerOptions()
{
PropertyNamingPolicy = JsonNamingPolicy.CamelCase
} );