Replace single quote with sanitize_replacement character in slugs

**Is your feature request related to a problem? Please describe.**

Current slug feature removes single quotes (used as apostrophes) without replacing them with the `sanitize_replacement` character.

For example I have a French content titled `Test d'image`.

The slug is computed as `test-dimage` with this configuration:

```yaml
slug:
encoding: "ascii"
clean_accents: true
sanitize_replacement: "-"
```

This is wrong, as “dimage” is not a word.

I believe the slug should be `test-d-image`.

**Describe the solution you'd like**

I think single quotes (and maybe other characters) should also be replaced with the `sanitize_replacement` character.

**Describe alternatives you've considered**

I could use my own slugify function, if it was possible.

Maybe this PR would allow it (I'm not sure):
- #6690

In other projects, I use [@sindresorhus/slugify](https://github.com/sindresorhus/slugify).

I even developed an extended version for some non latin characters, this is not a trivial topic: https://github.com/nhoizey/eleventy-plugin-pack11ty/blob/main/_11ty/utils/slugify.js

Start by locating the slug generation entry point and the handling of the sanitize_replacement configuration, then reproduce the provided French title and ASCII slug settings. Done means single quotes are replaced consistently with the configured character so the example produces `test-d-image`, with coverage for the behavior and any related characters considered in scope.

Written by the indexing model from the issue text.