manifest: Zephyr update

[vili-nordic]

TF-M GRTC fix.

[NordicBuilder]

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

Name	Old Revision	New Revision	Diff
zephyr	nrfconnect/sdk-zephyr@a56fee6	nrfconnect/sdk-zephyr@4f182bc (main)	nrfconnect/[email protected]

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
test-fw-nrfconnect-ble	X
test-fw-nrfconnect-ble_samples	X
test-fw-nrfconnect-fem	X
test-fw-nrfconnect-nfc	X
test-fw-nrfconnect-nrf-iot_libmodem-nrf	X
test-fw-nrfconnect-nrf-iot_samples	X
test-fw-nrfconnect-nrf-iot_thingy91	X
test-fw-nrfconnect-nrf_crypto	X
test-fw-nrfconnect-rpc	X
test-fw-nrfconnect-rs	X
test-fw-nrfconnect-tfm	X
test-low-level	X
test-sdk-audio	X
test-sdk-find-my	X

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.

[anangl]

Please update with SHA: 4f182bc4e3fb617903a5fbed2bc1e02e86d1c1cf.

[anangl]

Zephyr revision will be updated further by #15938.