fix: add prefix to dependabot PR (#1361)

Author: andreaangiolillo

.github/dependabot.yml

@@ -5,13 +5,17 @@ updates:
     schedule:
       interval: weekly
       day: tuesday
+    commit-message:
+      prefix: "chore"
     reviewers:
       - "mongodb/apix-integrations"
   - package-ecosystem: github-actions
     directory: "/"
     schedule:
       interval: weekly
       day: tuesday
+    commit-message:
+      prefix: "chore"
     reviewers:
       - "mongodb/apix-integrations"