Bump Testcontainers from 4.7.0 to 4.9.0

---
updated-dependencies:
- dependency-name: Testcontainers
  dependency-version: 4.9.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: testcontainers
...

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

Author: dependabot[bot]

src/Microcks.Testcontainers/Microcks.Testcontainers.csproj

@@ -5,7 +5,7 @@
         <GenerateSBOM>true</GenerateSBOM>
     </PropertyGroup>
     <ItemGroup>
-		<PackageReference Include="Testcontainers" Version="4.7.0" />
+		<PackageReference Include="Testcontainers" Version="4.9.0" />
         <PackageReference Include="System.Net.Http.Json" Version="10.0.0" />
         <PackageReference Include="Microsoft.Sbom.Targets" Version="4.1.2">
             <PrivateAssets>all</PrivateAssets>