doc: Add changelog entry for Oberon PSA core 1.3.4

Update the changelog with the new features introduced
with the new Oberon PSA core.

Signed-off-by: Georgios Vasilakis <georgios.vasilakis@nordicsemi.no>

Author: Vge0rge

doc/nrf/releases_and_maturity/releases/release-notes-3.0.0-preview1.rst

@@ -108,6 +108,14 @@ Security
     * Support for HKDF-Expand and HKDF-Extract in CRACEN.
     * Support for Ed25519ph(HashEdDSA) to CRACEN.
 
+  * Updated the Oberon PSA core to version 1.3.4 which introduces support for the following:
+
+    * PSA static key slots with the option :kconfig:option:`CONFIG_MBEDTLS_PSA_STATIC_KEY_SLOTS`.
+    * Key Wrap with and without padding (NIST-SP-800-38F) using Oberon PSA driver.
+    * WPA3-SAE and WPA3-SAE-PT using Oberon PSA driver.
+    * NIST SP 800-108 conformant CMAC and HMAC based key derivation using Oberon PSA driver.
+  * For more information regarding the Oberon PSA core 1.3.4 update see the changelog entry in the Oberon PSA core repository.
+
   * Updated the :ref:`app_approtect` page with nRF Util commands that replaced the nrfjprog commands.
     This is part of the ongoing work of archiving `nRF Command Line Tools`_ and replacing them with nRF Util.
   * Moved the :ref:`app_boards_spe_nspe` documentation page under :ref:`security` from the :ref:`ug_app_dev` section.