docs: add zod-fixture to mocking ecosystem (#2409)

Co-authored-by: Colin McDonnell <colinmcd94@gmail.com>

README.md

@@ -488,6 +488,7 @@ There are a growing number of tools that are built atop or support Zod natively!
 
 - [`@anatine/zod-mock`](https://github.com/anatine/zod-plugins/tree/main/packages/zod-mock): Generate mock data from a Zod schema. Powered by [faker.js](https://github.com/faker-js/faker).
 - [`zod-mocking`](https://github.com/dipasqualew/zod-mocking): Generate mock data from your Zod schemas.
+- [`zod-fixture`](https://github.com/timdeschryver/zod-fixture): Use your zod schemas to automate the generation of non-relevant test fixtures in a deterministic way.
 - [`zocker`](https://zocker.sigrist.dev): Generate plausible mock-data from your schemas.
 
 #### Powered by Zod