feat(dependabot): create configuration file

Create basic configuration file for @dependabot.

Author: MrChocolatine

.dependabot/config.yml

@@ -0,0 +1,40 @@
+# Documentation :
+# https://dependabot.com/docs/config-file/
+
+# Validator for Dependabot config file
+# https://dependabot.com/docs/config-file/validator/
+
+version: 1
+
+update_configs:
+  - package_manager: "javascript"
+
+    # Where to look for package manifests. Relative to the repository's root.
+    directory: "/"
+
+    # How often to check for non-security updates and when to create pull requests.
+    # Security updates are always created as soon as possible (i.e., "live").
+    update_schedule: "monthly"
+
+    # How to update manifest version requirements.
+    # "auto" => version requirements increased if it's an app / range widened if it's a library.
+    version_requirement_updates: "auto"
+
+    # Format of commit messages and pull request titles.
+    commit_message:
+      prefix: "build"
+      include_scope: true
+
+    # Reviewers to set on pull requests
+    default_reviewers:
+      - "peopledoc/tribe-js"
+
+    # Limit which updates are allowed
+    allowed_updates:
+      - match:
+          update_type: "all" # all updates including indirect/sub-dependencies
+
+    ignored_updates:
+    - match:
+        # Ignore updates of `ember-cli` as we want to take care of these by ourselves
+        dependency_name: "ember-cli"