manifest: update sdk-zephyr with the latest PDM driver

Include
Pull latest version of the PDM driver
zephyrproject-rtos/zephyr#87105
nrfconnect/sdk-zephyr#2789

Signed-off-by: Sebastian Głąb <[email protected]>

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: 926f1420dc656640cc430952c46fcd77ce0a470f
+      revision: 91f09557641e886420f95a5fb184459b4d2af630
       import:
         # In addition to the zephyr repository itself, NCS also
         # imports the contents of zephyr/west.yml at the above