Enable Dependabot PRs (#4751)

Signed-off-by: Holger Friedrich <mail@holger-friedrich.de>

Author: holgerfriedrich

.github/dependabot.yml

@@ -0,0 +1,16 @@
+# To get started with Dependabot version updates, you'll need to specify which
+# package ecosystems to update and where the package manifests are located.
+# Please see the documentation for all configuration options:
+# https://docs.github.com/en/code-security/dependabot/working-with-dependabot/dependabot-options-reference
+
+version: 2
+updates:
+  - open-pull-requests-limit: 10
+  - package-ecosystem: "github-actions" # See documentation for possible values
+    directory: "/" # Location of package manifests
+    schedule:
+      interval: "weekly"
+  - package-ecosystem: "maven" # See documentation for possible values
+    directory: "/" # Location of package manifests
+    schedule:
+      interval: "weekly"