fix(deps): Update dependency @grpc/grpc-js to v1.9.12 (#30)

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 | [`1.9.9` -> `1.9.12`](https://renovatebot.com/diffs/npm/@grpc%2fgrpc-js/1.9.9/1.9.12) |

---

### Release Notes

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

### [`v1.9.12`](https://togithub.com/grpc/grpc-node/releases/tag/%40grpc/grpc-js%401.9.12): @&#8203;grpc/grpc-js 1.9.2

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

-   Fix a bug that could cause connectivity state information to become stale in some circumstances ([#&#8203;2623](https://togithub.com/grpc/grpc-node/issues/2623))

### [`v1.9.11`](https://togithub.com/grpc/grpc-node/releases/tag/%40grpc/grpc-js%401.9.11): @&#8203;grpc/grpc-js 1.9.11

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

-   Fix a busy loop when recovering from a failure to establish a connection to a unix domain socket address target ([#&#8203;2618](https://togithub.com/grpc/grpc-node/issues/2618))
-   Fix a bug that caused clients to stop trying to connect to a fixed IP address target after a working connection drops ([#&#8203;2619](https://togithub.com/grpc/grpc-node/issues/2619))

### [`v1.9.10`](https://togithub.com/grpc/grpc-node/releases/tag/%40grpc/grpc-js%401.9.10): @&#8203;grpc/grpc-js 1.9.10

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

-   Provide the correct port to the proxy when connecting to a target without an explicitly specified port ([#&#8203;2608](https://togithub.com/grpc/grpc-node/issues/2608) contributed by [@&#8203;segevfiner](https://togithub.com/segevfiner))
-   Properly handle goaway events with no additional data attached ([#&#8203;2611](https://togithub.com/grpc/grpc-node/issues/2611))

</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:eyJjcmVhdGVkSW5WZXIiOiIzNi4xMDkuNCIsInVwZGF0ZWRJblZlciI6IjM2LjEwOS40IiwidGFyZ2V0QnJhbmNoIjoibWFpbiJ9-->