[nrf noup] manifest: NCS 2.6.1

Manifest now follows NCS v2.6.1 release tag.

Signed-off-by: Vinayak Kariappa Chettimada <vinayak.kariappa.chettimada@nordicsemi.no>

Author: cvinayak

west.yml

@@ -13,5 +13,5 @@ manifest:
     - name: nrf
       remote: ncs
       repo-path: sdk-nrf
-      revision: v2.6.0
+      revision: v2.6.1
       import: true