Release/2.4.0 (#573)

* Feature/2.4.0 (#1376) (#1383)

* Replacing 'session-based binding' of attestations by 'presentation-based binding'

Following Paolo's oral comment on ARF 2.3

* Removing combined presentations of attestations for the list of topics to be discussed

Section 1.7 of main document

* Changes related to the introduction of the Topic U discussion paper in the ARF

As well as some editorial fixes and corrections of broken links to Topic 31.

* Solving #1199

Also making the first changes for integrating of Topic H.

* Solving #1201

* Changes related to the integration of Topic H

* Solved #1217

* Solved #1137

* Solving #1305

* Solving #1315

* Solved #1319

* Fixing some spelling mistakes and removing an outdated note

* chars encoding fixed in annex-3.01-pid-rulebook.md
and annex-2-high-level-requirements.md

* Fixed SUA language.

* Updates changelog and read.me for discussion topics (#1384)

---------

Co-authored-by: Paul Hin <phin@scytales.com>

Author: paolo-de-rosa

CHANGELOG

@@ -5,6 +5,15 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semverdoc.org/).
 
+## [2.4.0] - 2025 - 07 - 18
+
+Changes:
+
+- the discussion Paper for Topic U was integrated into Section 6.5.3.6, and into Topic 19 and Topic 40.
+- the discussion Paper for Topic H was integrated into Topic 19.
+- a number of issues raised via Confluence or GitHub were solved.
+- apart from these changes, a limited number of editorial mistakes were corrected.
+
 ## [2.3.0] - 2025 - 07 - 04
 
 Changes: