Add dependabot configuration

Author: aneshlya

.github/dependabot.yml

@@ -0,0 +1,21 @@
+# Copyright 2025, Intel Corporation
+# SPDX-License-Identifier: BSD-3-Clause
+
+version: 2
+updates:
+  # Maintain dependencies for GitHub Actions
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    commit-message:
+      prefix: "ci:"
+    open-pull-requests-limit: 1
+    groups:
+      ga-dependencies:
+        applies-to: version-updates
+        patterns:
+        - "*"
+    ignore:
+      - dependency-name: "*"
+        update-types: ["version-update:semver-patch"] # Ignore patch updates