chore(repo): add dependabot (#190)

.github/dependabot.yml

@@ -0,0 +1,11 @@
+# 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/github/administering-a-repository/configuration-options-for-dependency-updates
+
+version: 2
+updates:
+    - package-ecosystem: 'npm' # See documentation for possible values
+      directory: '/' # Location of package manifests
+      schedule:
+          interval: 'weekly'

.gitignore

@@ -81,6 +81,6 @@ npm-debug.log*
 !.yarn/versions
 *.DS_Store
 *.tgz
-
+!.github/**/*.yml
 !fern/**/*.yml
 revert-dev.js