doc: update changelogs for v2.7.0

Update doc versions in nrfxlib for v2.7.0

Signed-off-by: Wille Backman <[email protected]>

Author: wiba-nordic

mpsl/CHANGELOG.rst

@@ -7,8 +7,8 @@ Changelog
    :local:
    :depth: 2
 
-Main Branch
-***********
+nRF Connect SDK v2.7.0
+**********************
 
 Changes
 =======

nfc/CHANGELOG.rst

@@ -9,8 +9,8 @@ Changelog
 
 All notable changes to this project are documented in this file.
 
-main branch
-***********
+nRF Connect SDK v2.7.0
+**********************
 
 Bug fixes
 =========

nrf_802154/doc/CHANGELOG.rst

@@ -10,8 +10,8 @@ Changelog
 All notable changes to this project are documented in this file.
 See also :ref:`nrf_802154_limitations` for permanent limitations.
 
-Main branch - nRF 802.15.4 Radio Driver
-***************************************
+nRF Connect SDK v2.7.0 - nRF 802.15.4 Radio Driver
+**************************************************
 
 Bug fixes
 =========

nrf_modem/doc/CHANGELOG.rst

@@ -9,8 +9,8 @@ Changelog
 
 All notable changes to this project are documented in this file.
 
-nrf_modem
-*********
+nrf_modem 2.7.0
+***************
 
 The library is now released in two variants, with different feature sets and support for different variants of the nRF91 Series firmware.
 

softdevice_controller/CHANGELOG.rst

@@ -9,8 +9,8 @@ Changelog
 
 All the notable changes to this project are documented on this page.
 
-Main branch
-***********
+nRF Connect SDK v2.7.0
+**********************
 
 Added
 =====

zboss/CHANGELOG.rst

@@ -9,19 +9,20 @@ Changelog
 
 All notable changes to this project in the |NCS| are documented in this file.
 
-Main branch
-***********
+nRF Connect SDK v2.7.0
+**********************
 
 Updated
 =======
 
 * The ZBOSS stack to version ``3.11.4.0+5.1.5``.
-  For detailed information, see `ZBOSS stack release notes`_ for the |NCS| v2.6.0 release.
+  For detailed information, see `ZBOSS stack release notes`_ for the |NCS| v2.7.0 release.
 
 Bug fixes
 =========
 
-* Fixed an issue where corrupted entry integrity in zb_nvram resulted in an infinite loop of device reboots.
+* Fixed an issue where corrupted entry integrity in Zigbee NVRAM resulted in an infinite loop of device reboots.
+* Fixed an issue preventing the *BatteryVoltageThreshold1-3* attributes from being properly configured.
 
 nRF Connect SDK v2.6.0
 **********************