Replace json-snaphot dependency

### Problem

[The json-snapshot library](https://github.com/json-snapshot/json-snapshot.github.io) is no longer maintained. We should find a replacement.

### Solution

- Replace the json-snapshot library (I think some/all snapshot files would have to be updated as well)
- (optional) Investigate if there is an easy way to read the snapshot files as UTF-8 strings. Currently the test are failing on Windows because of the "ℏ" symbol in the snapshot files.

### Alternatives

_No response_