manifest: Update sdk-zephyr revision (auto-manifest PR)

Automatically created by Github Action

Signed-off-by: Nordic Builder <[email protected]>

Author: NordicBuilder

west.yml

@@ -72,7 +72,7 @@ manifest:
     # https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/guides/modules.html
     - name: zephyr
       repo-path: sdk-zephyr
-      revision: 64796d7323b1ae58b29542c48a7bf9a0f8d241c1
+      revision: pull/1939/head
       import:
         # In addition to the zephyr repository itself, NCS also
         # imports the contents of zephyr/west.yml at the above