fix(deps): update dependency grpc-gcp to v0.4.2 (#1074)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [grpc-gcp](https://github.com/GoogleCloudPlatform/grpc-gcp-node) | [`0.4.1` -> `0.4.2`](https://renovatebot.com/diffs/npm/grpc-gcp/0.4.1/0.4.2) | [![age](https://badges.renovateapi.com/packages/npm/grpc-gcp/0.4.2/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/npm/grpc-gcp/0.4.2/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/npm/grpc-gcp/0.4.2/compatibility-slim/0.4.1)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/npm/grpc-gcp/0.4.2/confidence-slim/0.4.1)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

<details>
<summary>GoogleCloudPlatform/grpc-gcp-node</summary>

### [`v0.4.2`](https://github.com/GoogleCloudPlatform/grpc-gcp-node/blob/HEAD/CHANGELOG.md#&#8203;042-httpsgithubcomGoogleCloudPlatformgrpc-gcp-nodecomparev041v042-2022-04-18)

[Compare Source](https://github.com/GoogleCloudPlatform/grpc-gcp-node/compare/v0.4.1...v0.4.2)

</details>

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package.json

@@ -54,7 +54,7 @@
     "escape-string-regexp": "^4.0.0",
     "extend": "^3.0.2",
     "google-gax": "^2.29.5",
-    "grpc-gcp": "0.4.1",
+    "grpc-gcp": "0.4.2",
     "is": "^3.0.1",
     "is-utf8": "^0.2.1",
     "lodash.snakecase": "^4.1.1",