Add dependabot

Signed-off-by: staticdev <staticdev-support@proton.me>

Author: staticdev

.github/dependabot.yml

@@ -0,0 +1,14 @@
+---
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    open-pull-requests-limit: 10
+
+  - package-ecosystem: "composer"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    open-pull-requests-limit: 10