ci: change commit message prefix for dependabot (#965)

Author: mmattel

.github/dependabot.yml

@@ -6,7 +6,7 @@ updates:
       interval: weekly
     open-pull-requests-limit: 10
     commit-message:
-      prefix: "chore(deps):"
+      prefix: "chore"
       include: "scope"
 
   - package-ecosystem: npm
@@ -16,7 +16,7 @@ updates:
       time: "22:00"
     open-pull-requests-limit: 10
     commit-message:
-      prefix: "chore(deps):"
+      prefix: "chore"
       include: "scope"
     ignore:
       - dependency-name: stylelint-config-standard