path variables with special characters in openapi spec get converted to invalid regex

### Expected Behavior

When using inso generate, the path variables should be converted to valid regex; replacing invalid characters with some other character.

### Actual Behavior

The path variables are copied as-is, including characters that would be invalid for a regex in kong.

### Reproduction Steps

- create a spec with a `-` in a path variable;
- use inso generate config
- sync the config with DeCK

### Is there an existing issue for this?

- [X] I have searched the [issue tracker](https://www.github.com/Kong/insomnia/issues) for this problem.

### Additional Information

I have created a pull request to solve this issue. https://github.com/Kong/insomnia/pull/5096
I am creating this issue because I don't know if you monitor pull requests.

Start with the inso generate config path-variable handling and review pull request #5096, which the issue identifies as a proposed solution. Reproduce the case using a path variable containing a hyphen, then verify that generated regexes use valid replacements and sync successfully with DeCK.

Written by the indexing model from the issue text.