Bump Testcontainers from 3.8.0 to 3.9.0

Bumps [Testcontainers](https://github.com/testcontainers/testcontainers-dotnet) from 3.8.0 to 3.9.0.
- [Release notes](https://github.com/testcontainers/testcontainers-dotnet/releases)
- [Changelog](https://github.com/testcontainers/testcontainers-dotnet/blob/develop/CHANGELOG.md)
- [Commits](testcontainers/testcontainers-dotnet@3.8.0...3.9.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

test/Directory.Packages.props

@@ -55,7 +55,7 @@
     <PackageVersion Include="System.ServiceModel.Http" Version="6.2.0" />
     <PackageVersion Include="System.ServiceModel.NetTcp" Version="6.2.0" />
     <PackageVersion Include="System.ValueTuple" Version="4.5.0" />
-    <PackageVersion Include="Testcontainers" Version="3.8.0" />
+    <PackageVersion Include="Testcontainers" Version="3.9.0" />
     <PackageVersion Include="Verify.Xunit" Version="20.8.2" />
     <PackageVersion Include="xunit" Version="2.8.1" />
     <PackageVersion Include="xunit.abstractions" Version="2.0.3" />