west.yml: update zephyr to 68d73c0906d

Signed-off-by: Siva Subramanian Ravi Saravanan <sravisar@amd.com>

Author: Sivasubramanian678

west.yml

@@ -43,7 +43,7 @@ manifest:
 
     - name: zephyr
       repo-path: zephyr
-      revision: c162980efd9ad8616d0e2fe886ca917d8d8d240a
+      revision: 68d73c0906d18e1027419ae59b0ec1a4e1c91c8e
       remote: zephyrproject
 
       # Import some projects listed in zephyr/west.yml@revision