surface: linux 6.15.3 -> 6.15.6

Author: matthiasdotsh

microsoft/surface/common/default.nix

@@ -19,7 +19,7 @@ let
     if kernelVersion == "longterm" then
       "6.12.19"
     else if kernelVersion == "stable" then
-      "6.15.3"
+      "6.15.6"
     else
       abort "Invalid kernel version: ${kernelVersion}";
 
@@ -28,7 +28,7 @@ let
     if kernelVersion == "longterm" then
       "sha256-1zvwV77ARDSxadG2FkGTb30Ml865I6KB8y413U3MZTE="
     else if kernelVersion == "stable" then
-      "sha256-ErUMiZJUONnNc4WgyvycQz5lYqxd8AohiJ/On1SNZbA="
+      "sha256-K7WGyVQnfQcMj99tcnX6qTtIB9m/M1O0kdgUnMoCtPw="
     else
       abort "Invalid kernel version: ${kernelVersion}";