ci: replace Keen with Doug in GitHub CODEOWNERS

Author: kyliau

.github/CODEOWNERS

@@ -1,15 +1,15 @@
-/modules/aspnetcore-engine/* @MarkPieszak @kyliau
+/modules/aspnetcore-engine/* @MarkPieszak @dgp1130
 /modules/builders @alan-agius4
-/modules/common/* @kyliau @CaerusKaru
-/modules/express-engine/* @kyliau @FrozenPandaz
-/modules/hapi-engine/* @kyliau @CaerusKaru
+/modules/common/* @dgp1130 @CaerusKaru
+/modules/express-engine/* @dgp1130 @FrozenPandaz
+/modules/hapi-engine/* @dgp1130 @CaerusKaru
 
 # Tooling
-/scripts/** @CaerusKaru @kyliau
-/integration/** @CaerusKaru @kyliau
-/tools/** @CaerusKaru @kyliau
+/scripts/** @CaerusKaru @dgp1130
+/integration/** @CaerusKaru @dgp1130
+/tools/** @CaerusKaru @dgp1130
 
 # Misc
-/* @kyliau
-/.github/** @kyliau
-/modules/* @kyliau
+/* @dgp1130
+/.github/** @dgp1130
+/modules/* @dgp1130