fix(deps): Update dependency @grpc/grpc-js to v1.10.8 (#58)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [@grpc/grpc-js](https://grpc.io/) ([source](https://togithub.com/grpc/grpc-node)) | devDependencies | patch | [`1.10.7` -> `1.10.8`](https://renovatebot.com/diffs/npm/@grpc%2fgrpc-js/1.10.7/1.10.8) |

---

### Release Notes

<details>
<summary>grpc/grpc-node (@&#8203;grpc/grpc-js)</summary>

### [`v1.10.8`](https://togithub.com/grpc/grpc-node/releases/tag/%40grpc/grpc-js%401.10.8): @&#8203;grpc/grpc-js 1.10.8

[Compare Source](https://togithub.com/grpc/grpc-node/compare/@grpc/[email protected]...@grpc/[email protected])

-   Fix a bug that caused channels with `unix:` targets to not reconnect after the channel goes idle ([#&#8203;2750](https://togithub.com/grpc/grpc-node/issues/2750))

</details>

---

### Configuration

📅 **Schedule**: Branch creation - "before 4am on the first day of the month" (UTC), 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.

---

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

---

This PR has been generated by [Renovate Bot](https://togithub.com/renovatebot/renovate).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy4zODMuMCIsInVwZGF0ZWRJblZlciI6IjM3LjM4My4wIiwidGFyZ2V0QnJhbmNoIjoibWFpbiIsImxhYmVscyI6WyJhdXRvbWVyZ2UiXX0=-->