Migrate usage of deprecated EventHubs package

[jviau]

Our tests reference a deprecated EventHuibs package:

azure-functions-host/test/WebJobs.Script.Tests.Integration/WebJobs.Script.Tests.Integration.csproj

Line 44 in 1bf0813

<PackageReference Include="Microsoft.Azure.EventHubs" Version="2.1.0" />

Only a single test appears to use it, which is skipped:

azure-functions-host/test/WebJobs.Script.Tests.Integration/WebHostEndToEnd/SamplesEndToEndTests_Node.cs

Lines 42 to 43 in 1bf0813

	[Fact(Skip = "Need to investigate .NET 6 failure")]
	public async Task EventHubTrigger()

We should either migrate and fix this test, or remove the package and test.