Merge pull request #472 from ono-max/patch-1

Update bundler in Dependabot

Author: hsbt

.github/dependabot.yml

@@ -1,6 +1,12 @@
 version: 2
 updates:
+  # dependencies for GitHub Actions
   - package-ecosystem: 'github-actions'
     directory: '/'
     schedule:
       interval: 'weekly'
+  # dependencies for bundler
+  - package-ecosystem: 'bundler'
+    directory: '/'
+    schedule:
+      interval: 'weekly'