github-action: include the dependabot section for pre-commit (#2577)

* github-action: include the dependabot section for pre-commit

* Apply suggestion from @v1v

---------

Co-authored-by: obltmachine <obltmachine@users.noreply.github.com>
Co-authored-by: Victor Martinez <victormartinezrubio@gmail.com>

Author: 3 people

.github/dependabot.yml

@@ -41,3 +41,13 @@ updates:
     registries: "*"
     schedule:
       interval: "daily"
+
+  - package-ecosystem: pre-commit
+    directory: "/"
+    schedule:
+      interval: 'weekly'
+      day: 'sunday'
+      time: '22:00'
+    open-pull-requests-limit: 5
+    labels:
+      - 'changelog:dependencies'