[BUG] Breaking changes in date-fns version 3

[X] I have written a good issue

Describe the bug

When installing Kirby in a project its peer dependencies in the project's package-lock.json file get specified like this:

"peerDependencies": {
  ...
  "date-fns": ">=2.21.1",
  "date-fns-tz": ">=1.1.4",
  ...
}

This lets npm install the latest versions of both date-fns and date-fns-tz. Recently a version 3 of date-fns has been released which introduced a lot of breakting changes in the file structure, and currently there are no versions of date-fns-tz that support these changes. This means that currently a project using Kirby will not be able to build, unless an older date-fns version is specified in either the project or one of the other dependencies.

Describe how to reproduce the bug

Create a new project.
Install latest Kirby version.
Run the application.
Errors regarding files imported from date-fns are thrown by date-fns-tz.

Which Kirby version was used?

8.11.2 and 9.0.0-rc

What was the expected behavior?

The project runs.

Please complete the following information:

OS: MacOS
Browser: Chrome
Browser version: 120.0.6099.109

Checklist:

The following tasks should be carried out in sequence in order to follow the process of contributing correctly.

Verification

To make sure the bug is not intended behaviour; it should be verified by a member of team Kirby before moving on to implementation.

[ ] Make sure the NOT verified label has been removed by a member of team Kirby; do not proceed until this is done

Implementation

The contributor who wants to implement this issue should:

[ ] Make sure you have read: "Before you get coding".
[ ] Signal to others you are working on the issue by assigning yourself.
[ ] Create a branch from the develop branch following our branch naming convention.
[ ] Create a test that reproduces the bug following guidelines in: "The good: Test".
[ ] Write code to fix the bug

Review

Once the issue has been implemented and is ready for review:

[ ] Do a self-review.
[ ] Create a pull-request.

kirbydesign / designsystem