manifest: sdk-nrfxlib: Pull fix for regulatory memleak

Pull support to add a flag to know if a regulatory event is solicited or
not.

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

Author: krish2718

west.yml

@@ -142,7 +142,7 @@ manifest:
     - name: nrfxlib
       repo-path: sdk-nrfxlib
       path: nrfxlib
-      revision: v2.6.3
+      revision: 8167cf2dc807b0d8341c547918ca17fa7e466c4f
     - name: trusted-firmware-m
       repo-path: sdk-trusted-firmware-m
       path: modules/tee/tf-m/trusted-firmware-m