Configure Dependabot for Maven and GitHub Actions

Added Maven and GitHub Actions package ecosystems for Dependabot updates.

Author: adangel

.github/dependabot.yml

@@ -0,0 +1,15 @@
+version: 2
+# https://docs.github.com/en/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file
+updates:
+  - package-ecosystem: "maven"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "wednesday"
+    # Allow up to 10 open pull requests for maven dependencies
+    open-pull-requests-limit: 10
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "wednesday"