fix(deps): update rust crate rocket_okapi to 0.9.0 (#579)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [rocket_okapi](https://redirect.github.com/GREsau/okapi) |
dependencies | minor | `0.8.0` -> `0.9.0` |

---

### Configuration

📅 **Schedule**: Branch creation - "after 9pm,before 6am" in timezone
Europe/Zurich, Automerge - At any time (no schedule defined).

🚦 **Automerge**: Enabled.

♻ **Rebasing**: Whenever PR is behind base branch, or you tick the
rebase/retry checkbox.

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

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

This PR was generated by [Mend Renovate](https://mend.io/renovate/).
View the [repository job
log](https://developer.mend.io/github/smartive/zitadel-rust).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzOS45LjUiLCJ1cGRhdGVkSW5WZXIiOiIzOS45LjUiLCJ0YXJnZXRCcmFuY2giOiJtYWluIiwibGFiZWxzIjpbImRlcGVuZGVuY2llcyJdfQ==-->

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Cargo.toml

@@ -170,7 +170,7 @@ tokio = { version = "1.37.0", optional = true, features = [
 tonic = { version = "0.12.1", features = [
   "tls",
 ], optional = true }
-rocket_okapi = { version = "0.8.0", optional = true, default-features = false }
+rocket_okapi = { version = "0.9.0", optional = true, default-features = false }
 schemars = {version = "0.8.21", optional = true}
 tonic-types = { version = "0.12.1", optional = true }