Merge pull request #303 from openedx/repo-tools/salman/add-dependabot-file-39eeda3

chore: enable github action auto update in dependabot.yml

Author: feanil

.github/dependabot.yml

@@ -0,0 +1,7 @@
+version: 2
+updates:
+    # Adding new check for github-actions
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+        interval: "weekly"