Upgrade to GitHub-native Dependabot (#159)

* Upgrade to GitHub-native Dependabot

* Update dependabot.yml

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>
Co-authored-by: Fede Isas <federicoisas@gmail.com>

Author: dependabot-preview[bot]

.dependabot/config.yml

@@ -0,0 +1,9 @@
+version: 2
+
+updates:
+- package-ecosystem: composer
+  directory: "/"
+  schedule:
+    interval: daily
+    time: "09:00"
+  open-pull-requests-limit: 10