chore(deps): update dependency sinon to v10 (#420)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [sinon](https://sinonjs.org/) ([source](https://togithub.com/sinonjs/sinon)) | [`^9.0.1` -> `^10.0.0`](https://renovatebot.com/diffs/npm/sinon/9.2.4/10.0.0) | [![age](https://badges.renovateapi.com/packages/npm/sinon/10.0.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/npm/sinon/10.0.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/npm/sinon/10.0.0/compatibility-slim/9.2.4)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/npm/sinon/10.0.0/confidence-slim/9.2.4)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

<details>
<summary>sinonjs/sinon</summary>

### [`v10.0.0`](https://togithub.com/sinonjs/sinon/blob/master/CHANGELOG.md#&#8203;1000--2021-03-22)

[Compare Source](https://togithub.com/sinonjs/sinon/compare/v9.2.4...v10.0.0)

==================

-   Upgrade nise to 4.1.0
-   Use [@&#8203;sinonjs/eslint-config](https://togithub.com/sinonjs/eslint-config)[@&#8203;4](https://togithub.com/4) => Adopts ES2017 => Drops support for IE 11, Legacy Edge and legacy Safari

</details>

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packages/google-cloud-oslogin/package.json

@@ -62,7 +62,7 @@
     "mocha": "^8.0.0",
     "null-loader": "^4.0.0",
     "pack-n-play": "^1.0.0-2",
-    "sinon": "^9.0.1",
+    "sinon": "^10.0.0",
     "ts-loader": "^8.0.0",
     "typescript": "^3.8.3",
     "webpack": "^5.0.0",