refactor: remove DB UX Design System 3 leftovers (#501)

* Delete auto-update.yml

* Delete 99-auto-update-pr.yml

* Update default.yml

* Update package.json

* Discard changes to .github/workflows/99-auto-update-pr.yml

Author: mfranzke

.github/workflows/auto-update.yml

@@ -5,7 +5,6 @@ on:
   push:
     branches:
       - "main"
-      - "dbux-3"
 
 jobs:
   init:

.github/workflows/default.yml

@@ -47,7 +47,7 @@
     "prepare": "node -e \"try { require('husky').install() } catch (e) {}\""
   },
   "validate-branch-name": {
-    "pattern": "((dbux-3)|(dependabot-)|^((test|feat|fix|chore|docs|refactor|style|ci|perf|[0-9]+)\\-[a-zA-Z0-9\\-]+)$)",
+    "pattern": "((dependabot-)|^((test|feat|fix|chore|docs|refactor|style|ci|perf|[0-9]+)\\-[a-zA-Z0-9\\-]+)$)",
     "errorMsg": "There is something wrong with your branch name. You should rename your branch to a valid name and try again. See the Pattern below."
   },
   "keywords": [],