Bump Testcontainers from 4.11.0 to 4.12.0

---
updated-dependencies:
- dependency-name: Testcontainers
  dependency-version: 4.12.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

eFormAPI/Plugins/ItemsPlanning.Pn/ItemsPlanning.Pn.Test/ItemsPlanning.Pn.Test.csproj

@@ -15,7 +15,7 @@
         <PrivateAssets>all</PrivateAssets>
       </PackageReference>
       <PackageReference Include="NUnit3TestAdapter" Version="6.2.0" />
-      <PackageReference Include="Testcontainers" Version="4.11.0" />
+      <PackageReference Include="Testcontainers" Version="4.12.0" />
       <PackageReference Include="Testcontainers.Mariadb" Version="4.11.0" />
     </ItemGroup>