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### Motivation and context
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The main reason for this is to update the Helm chart, because the
current one conflicts with the Redis chart I want to add (in #7245).

But also the version we have is quite old and out of support, so it's
due for an update anyway.

The change in `objects.py` is due to the fact that with the new version
of Clickhouse, the value of `date` somehow became a timezone-aware
datetime object, so the output of `isoparse` now includes a UTC offset,
and appending a "Z" now creates a malformed date. I chose to replace
this with a custom format string, which is consistent with other date
formatting code in the `analytics_report` app.

### How has this been tested?
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I manually tried both the Helm chart and the Compose file, making sure
that the analytics are still recorded and displayed.

I also checked that a database created with the previous Clickhouse
version can be loaded with the new version (it can).

### Checklist
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- [x] I submit my changes into the `develop` branch
- [ ] I have created a changelog fragment <!-- see top comment in
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- ~~[ ] I have updated the documentation accordingly~~
- ~~[ ] I have added tests to cover my changes~~
- [x] I have linked related issues (see [GitHub docs](

https://help.github.com/en/github/managing-your-work-on-github/linking-a-pull-request-to-an-issue#linking-a-pull-request-to-an-issue-using-a-keyword))
- ~~[ ] I have increased versions of npm packages if it is necessary

([cvat-canvas](https://github.com/opencv/cvat/tree/develop/cvat-canvas#versioning),

[cvat-core](https://github.com/opencv/cvat/tree/develop/cvat-core#versioning),

[cvat-data](https://github.com/opencv/cvat/tree/develop/cvat-data#versioning)
and

[cvat-ui](https://github.com/opencv/cvat/tree/develop/cvat-ui#versioning))~~

### License

- [x] I submit _my code changes_ under the same [MIT License](
https://github.com/opencv/cvat/blob/develop/LICENSE) that covers the
project.
  Feel free to contact the maintainers if that's a concern.