CHANGELOG: Add warning about issue with view templates and EFX Toolkit

Author: bertrand-lorentz

CHANGELOG.md

@@ -9,6 +9,10 @@ This release brings the following corrections in the validation rules, making th
 
 This release also includes updated translations and updated notice visualisation templates.
 
+> [!WARNING]
+> Some of the changes in view templates trigger a bug in efx-toolkit-java version 2.0.0-alpha.1 and before, causing an error when translating some templates.
+> So if your application uses the view templates and the EFX Toolkit, ensure that you're using efx-toolkit-java version 2.0.0-alpha.2 or later.
+
 A comprehensive list of changes between SDK 1.7.3 and SDK 1.7.4 can be seen at <https://github.com/OP-TED/eForms-SDK/compare/1.7.3...1.7.4>
 
 You can explore the changes between those versions at <https://docs.ted.europa.eu/eforms-sdk-explorer?version=1.7.4&base=1.7.3>