Create dependabot.yml

Author: Remi-Gau

.github/dependabot.yml

@@ -0,0 +1,13 @@
+# Documentation
+# https://docs.github.com/en/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file
+version: 2
+updates:
+  - package-ecosystem: 'github-actions'
+    directory: '/'
+    schedule:
+      interval: 'monthly'
+
+  - package-ecosystem: 'gitsubmodule'
+    directory: '/'
+    schedule:
+      interval: 'monthly'