ci: remove pre-commit config from dependabot and add new workflow for pre-commit hook updates

Author: Rasic2

.github/dependabot.yml

@@ -8,12 +8,3 @@ updates:
     open-pull-requests-limit: 99
     labels:
       - 'dependencies'
-
-  # 新增 pre-commit 配置
-  - package-ecosystem: pre-commit
-    directory: '/'
-    schedule:
-      interval: weekly
-    open-pull-requests-limit: 20  # 建议设置合理的限制，避免一次性太多 PR
-    labels:
-      - 'dependencies'

.github/workflows/update-pre-commit.yml

@@ -0,0 +1,19 @@
+name: Update pre-commit hooks
+
+on:
+  schedule:
+    - cron: '0 0 * * 0'
+  workflow_dispatch:
+
+jobs:
+  update:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+
+      - name: Update pre-commit hooks
+        uses: creyD/pre-commit-update@v1.2.0
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          label: 'dependencies'