manifest: sdk-zephyr: Pull latest nRF Wi-Fi fixes

Pull latest nRF Wi-Fi fixes:

* Stats from memory
* Coex using both SWCTRL
* STBC and PS-Poll configs

Signed-off-by: Chaitanya Tata <[email protected]>

Author: krish2718

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: e48bca44dd596dc66d71378e97bf5ceff2c483d0
+      revision: a4c6476531c1c3054d7ff44b905105aadd47411e
       import:
         # In addition to the zephyr repository itself, NCS also
         # imports the contents of zephyr/west.yml at the above