Update renovate bot to bundle 'digest' updates as one pull request.

[DertsizT]

Pull Request <Title>

<Description here>

Things to do during Peer Review

Please check all boxes before the Pull Request is merged. In case you skip a box, describe in the PRs description (that means: here) why the check is skipped.

• The Github Actions (including Sonarqube Gateway and Lint Checks) are green. This is enforced by Github.
• A peer-review has been executed
  • The code has been manually inspected by someone who did not implement the feature
  • If this PR includes work on the frontend, at least one @ts-nocheck is removed. Additionally, there should not be any @ts-nocheck in files modified by this PR. If no @ts-nocheck are left: Celebrate 🎉 🎊 type-safety and remove this entry.
• The PR actually implements what is described in the JIRA-Issue
• At least one test exists testing the new feature
  • If you have created new test files, make sure that they are included in a test container and actually run in the CI
• At least 3 consecutive CI runs are successfully executed to ensure that there are no flaky tests.
• Documentation is updated as required
• The automated deployment is updated if required
• If there was a database entity class added, there must also be a migration script for creating the corresponding database if flyway is already used by the service
• IF there are changes done to the framework data models or to a database entity class, the following steps were completed in order
  • A fresh clone of dataland.com is generated (see Wiki page on "OTC" for details)
  • The feature branch is deployed to clone with Reset non-user related Docker Volumes & Re-populate turned off
  • It's verified that the CD run is green
  • The new feature is manually used/tested/observed on the clone server. Testing of the new feature should (also) be done by a second, independent reviewer from the dev team
  • The feature branch is deployed to dev1 with Reset non-user related Docker Volumes & Re-populate turned on, and it's verified that the CD run is green
• ELSE, the new version is deployed to the dev server "dev1" using this branch
  • Run with setting Reset non-user related Docker Volumes & Re-populate turned on
  • It's verified that this version actually is the one deployed (check gitinfo for branch name and commit id!)
  • It's verified that the CD run is green
  • The new feature is manually used/tested/observed on dev server. Testing of the new feature should (also) be done by a second, independent reviewer from the dev team