chore: adjust dependabot commit message (#1784)

Author: mshima

.github/dependabot.yml

@@ -5,6 +5,10 @@ updates:
     schedule:
       interval: daily
     open-pull-requests-limit: 5
+    commit-message:
+      prefix: 'feat'
+      prefix-development: 'chore'
+      include: 'scope'
     ignore:
       - dependency-name: '@types/node'
         versions: ['>=17']