manifest: update sdk-zephyr

Include
drivers: spi: Support spim23 and spis24 instances
zephyrproject-rtos/zephyr#91434
nrfconnect/sdk-zephyr#2950

Signed-off-by: Sebastian Głąb <sebastian.glab@nordicsemi.no>

Author: nordic-segl

west.yml

@@ -65,7 +65,7 @@ manifest:
     # https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/guides/modules.html
     - name: zephyr
       repo-path: sdk-zephyr
-      revision: bcf554e67c331a512c67f91b57dc6d797899e356
+      revision: pull/2950/head
       import:
         # In addition to the zephyr repository itself, NCS also
         # imports the contents of zephyr/west.yml at the above