chore(deps): update dependency openapi-typescript to ^6.7.5

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
openapi-typescript (source)	^6.7.4 -> ^6.7.5

---

Release Notes

drwpow/openapi-typescript (openapi-typescript)

### [`v6.7.5`](https://togithub.com/drwpow/openapi-typescript/releases/tag/openapi-typescript%406.7.5) [Compare Source](https://togithub.com/drwpow/openapi-typescript/compare/openapi-typescript@6.7.4...openapi-typescript@6.7.5) ##### Patch Changes - [#​1535](https://togithub.com/drwpow/openapi-typescript/pull/1535) [`48ca069fd889acd469955589ff3ec74e775ca9fd`](https://togithub.com/drwpow/openapi-typescript/commit/48ca069fd889acd469955589ff3ec74e775ca9fd) Thanks [@​tvanier](https://togithub.com/tvanier)! - Support single operation parameter - [#​1524](https://togithub.com/drwpow/openapi-typescript/pull/1524) [`fe6c6d1526c59e4f9021d71cad74feba315f337f`](https://togithub.com/drwpow/openapi-typescript/commit/fe6c6d1526c59e4f9021d71cad74feba315f337f) Thanks [@​WickyNilliams](https://togithub.com/WickyNilliams)! - Keep type information for nullable fields when possible

---

Configuration

📅 Schedule: Branch creation - "every weekend" in timezone Europe/Berlin, Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• [ ] If you want to rebase/retry this PR, check this box

---

This PR has been generated by Mend Renovate. View repository job log here.