Add dependabot.yml (#59)

.github/workflows/dependabot.yml

@@ -0,0 +1,28 @@
+# 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/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file
+
+version: 2
+updates:
+  - package-ecosystem: "npm"
+    directories:
+      - "/"
+    schedule:
+      interval: "weekly"
+    open-pull-requests-limit: 3
+    reviewers:
+      - "@Addepar/web-core"
+    labels:
+      - "dependencies"
+  - package-ecosystem: "github-actions"
+    # Workflow files stored in the
+    # default location of `.github/workflows`
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    reviewers:
+      - "@Addepar/web-core"
+    open-pull-requests-limit: 3
+    labels:
+      - "dependencies"