manifest: Update sdk-nrfxlib revision

[sachinthegreen]

Pull in changes related to cleaning up of RPU interface file.

[NordicBuilder]

The following west manifest projects have been modified in this Pull Request:

Name	Old Revision	New Revision	Diff
nrfxlib	nrfconnect/sdk-nrfxlib@51fc239 (main)	nrfconnect/sdk-nrfxlib#1401	nrfconnect/sdk-nrfxlib#1401/files

Note: This message is automatically posted and updated by the Manifest GitHub Action.

[NordicBuilder]

Test specification

CI/Jenkins/NRF

• Integration Platforms

CI/Jenkins/integration

Test Module	File based changes	Manually selected	West overwrite
desktop52_verification	X
doc-internal	X
test-fw-nrfconnect-apps	X
test-fw-nrfconnect-ble_mesh	X
test-fw-nrfconnect-ble_samples	X
test-fw-nrfconnect-boot	X
test-fw-nrfconnect-chip	X
test-fw-nrfconnect-fem	X
test-fw-nrfconnect-nfc	X
test-fw-nrfconnect-nrf-iot_cloud	X
test-fw-nrfconnect-nrf-iot_libmodem-nrf	X
test-fw-nrfconnect-nrf-iot_lwm2m	X
test-fw-nrfconnect-nrf-iot_mosh	X
test-fw-nrfconnect-nrf-iot_nrf_provisioning	X	X
test-fw-nrfconnect-nrf-iot_positioning	X
test-fw-nrfconnect-nrf-iot_samples	X
test-fw-nrfconnect-nrf-iot_serial_lte_modem	X
test-fw-nrfconnect-nrf-iot_thingy91	X
test-fw-nrfconnect-nrf-iot_zephyr_lwm2m	X
test-fw-nrfconnect-nrf_crypto	X
test-fw-nrfconnect-proprietary_esb	X
test-fw-nrfconnect-ps	X
test-fw-nrfconnect-rpc	X
test-fw-nrfconnect-rs	X
test-fw-nrfconnect-tfm	X
test-fw-nrfconnect-thread	X
test-fw-nrfconnect-zigbee	X
test-low-level	X
test-sdk-audio	X
test-sdk-dfu	X
test-sdk-find-my	X
test-sdk-mcuboot	X
test-sdk-pmic-samples	X
test-sdk-sidewalk	X
test-sdk-wifi	X
test_ble_commit	X

All integration tests: null

Detailed information of selected test modules

Note: This message is automatically posted and updated by the CI

[NordicBuilder]

You can find the documentation preview for this PR at this link. It will be updated about 10 minutes after the documentation build succeeds.

Note: This comment is automatically posted by the Documentation Publishing GitHub Action.

[sachinthegreen]

This is now replaced with the upstream PR zephyrproject-rtos/zephyr#77994