doc: Updated release notes for Matter

Updated release notes for Matter to include information about
1.4.2 release scope

Signed-off-by: Kamil Kasperczyk <[email protected]>

Author: kkasperczyk-no

doc/nrf/protocols/matter/index.rst

@@ -15,17 +15,17 @@ It supports a wide range of existing technologies, including Wi-Fi®, Thread, an
 
 .. matter_intro_end
 
-|NCS| |release| allows you to develop applications with Matter specification version 1.4.1 and `Matter SDK version`_ 1.4.1.0.
+|NCS| |release| allows you to develop applications with Matter specification version 1.4.2 and `Matter SDK version`_ 1.4.2.0.
 For a full list of |NCS| and Matter versions, view the following table:
 
 .. toggle:: nRF Connect SDK, Matter specification, and Matter SDK versions
 
    +--------------------------+-----------------------------------------------------+------------------------+
    | nRF Connect SDK version  | Matter specification version                        | Matter SDK version     |
    +==========================+=====================================================+========================+
-   | v3.0.99 (latest)         | :ref:`1.4.1 <ug_matter_overview_dev_model_support>` | 1.4.1.0                |
-   +--------------------------+                                                     |                        |
-   | v3.0.2                   |                                                     |                        |
+   | v3.0.99 (latest)         | :ref:`1.4.2 <ug_matter_overview_dev_model_support>` | 1.4.2.0                |
+   +--------------------------+-----------------------------------------------------+------------------------+
+   | v3.0.2                   | :ref:`1.4.1 <ug_matter_overview_dev_model_support>` | 1.4.1.0                |
    +--------------------------+                                                     |                        |
    | v3.0.1                   |                                                     |                        |
    +--------------------------+                                                     |                        |

doc/nrf/releases_and_maturity/releases/release-notes-changelog.rst

@@ -181,7 +181,16 @@ Matter
 Matter fork
 +++++++++++
 
-|no_changes_yet_note|
+The Matter fork in the |NCS| (``sdk-connectedhomeip``) contains all commits from the upstream Matter repository up to, and including, the ``v1.4.2.0`` tag.
+
+The following list summarizes the most important changes inherited from the upstream Matter:
+
+* Updated:
+
+  * Fixed incorrect memory releases and unhandled exceptions.
+  * Improved robustness in group session management.
+  * Optimized the device commissioning process.
+
 
 nRF IEEE 802.15.4 radio driver
 ------------------------------