fix(deps): update dependency google-gax to v4.2.0 (#1988)

[![Mend Renovate](https://app.renovatebot.com/images/banner.svg)](https://renovatebot.com)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [google-gax](https://togithub.com/googleapis/gax-nodejs) ([source](https://togithub.com/googleapis/gax-nodejs/tree/HEAD/gax)) | [`4.1.0` -> `4.2.0`](https://renovatebot.com/diffs/npm/google-gax/4.1.0/4.2.0) | [![age](https://developer.mend.io/api/mc/badges/age/npm/google-gax/4.2.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/google-gax/4.2.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/google-gax/4.1.0/4.2.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/google-gax/4.1.0/4.2.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) |

---

### Release Notes

<details>
<summary>googleapis/gax-nodejs (google-gax)</summary>

### [`v4.2.0`](https://togithub.com/googleapis/gax-nodejs/blob/HEAD/gax/CHANGELOG.md#420-2024-01-18)

[Compare Source](https://togithub.com/googleapis/gax-nodejs/compare/google-gax-v4.1.0...v4.2.0)

##### Features

-   expose uuid for autopopulation of request_id ([#&#8203;1542](https://togithub.com/googleapis/gax-nodejs/issues/1542)) ([6c66e22](https://togithub.com/googleapis/gax-nodejs/commit/6c66e224919e1bb7a8c044927e1c70f9d32bddb4))

</details>

---

### Configuration

📅 **Schedule**: Branch creation - "after 9am and before 3pm" (UTC), Automerge - At any time (no schedule defined).

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

♻ **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 has been generated by [Mend Renovate](https://www.mend.io/free-developer-tools/renovate/). View repository job log [here](https://developer.mend.io/github/googleapis/nodejs-spanner).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy4xMzUuMCIsInVwZGF0ZWRJblZlciI6IjM3LjEzNS4wIiwidGFyZ2V0QnJhbmNoIjoibWFpbiJ9-->

package.json

@@ -65,7 +65,7 @@
     "events-intercept": "^2.0.0",
     "extend": "^3.0.2",
     "google-auth-library": "^9.0.0",
-    "google-gax": "4.1.0",
+    "google-gax": "4.2.0",
     "grpc-gcp": "^1.0.0",
     "is": "^3.2.1",
     "lodash.snakecase": "^4.1.1",