GIT - Sync dependabot settings with amdsmi

Change-Id: Id67a7f5273fd274291a1044dca50cc4006e853a5
Signed-off-by: Galantsev, Dmitrii <dmitrii.galantsev@amd.com>

.github/dependabot.yml

@@ -9,4 +9,10 @@ updates:
     directory: "/docs/sphinx" # Location of package manifests
     open-pull-requests-limit: 10
     schedule:
-      interval: "daily"
+      interval: "monthly"
+    labels:
+      - "documentation"
+      - "dependencies"
+      - "ci:docs-only"
+    reviewers:
+      - "samjwu"