chore: tell dependabot to do conventional commit messages (#5077)

This should make it do messages starting like:
"chore(deps):"

Author: phil-davis

.github/dependabot.yml

@@ -6,9 +6,15 @@ updates:
     interval: daily
     time: "22:00"
   open-pull-requests-limit: 10
+  commit-message:
+    prefix: "chore"
+    include: "scope"
 
 - package-ecosystem: github-actions
   directory: "/"
   schedule:
     interval: weekly
   open-pull-requests-limit: 10
+  commit-message:
+    prefix: "chore"
+    include: "scope"