Create Dependabot config file

dependabot-preview[bot] · web-flow · commit 1a4cd5f5bc90 · 2021-01-01T15:29:59.000Z
diff --git a/.github/dependabot.yml b/.github/dependabot.yml
@@ -0,0 +1,7 @@
+version: 2
+updates:
+- package-ecosystem: composer
+  directory: "/"
+  schedule:
+    interval: monthly
+  open-pull-requests-limit: 10
