GIT - Sync dependabot settings with amdsmi

Change-Id: I9442355fa0b4a7858c4c9232631a044789166601
Signed-off-by: Galantsev, Dmitrii <dmitrii.galantsev@amd.com>

.github/dependabot.yml

@@ -9,9 +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"