[77] Bugfix | Fix string typecasting

[Lokideos]

What is the purpose of this pull request?

Fixes #77

What changes did you make? (overview)

There was an issue with regex in Anyway::Autocast class, which typecasted "{\"baz\":\"fizz\",\"baz2\":\"fizz2\"}" string to an array.

Is there anything you'd like reviewers to focus on?

No

Checklist

• [x] I've added tests for this change
• [x] ~I've added a Changelog entry~
• [x] ~I've updated a documentation~

[Lokideos]

I don't think that any change in documentation is needed, and as far as I understand, changelog will be updated only during the next release.