[GHA] dependabot for github-actions (#3295)

### Changes

Enable dependabot for github actions

Author: AlexanderDokuchaev

.github/dependabot.yml

@@ -0,0 +1,15 @@
+# See help here: https://docs.github.com/en/free-pro-team@latest/github/administering-a-repository/enabling-and-disabling-version-updates
+
+version: 2
+updates:
+
+  # Github actions
+  - package-ecosystem: github-actions
+    directory: "/"
+    schedule:
+      interval: "daily"
+      time: "09:00"
+      timezone: "Asia/Dubai"
+    assignees:
+      - "AlexanderDokuchaev"
+    open-pull-requests-limit: 3