fix(deps): update dependency sinon to v14 (#943)

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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)) | [`^13.0.0` -> `^14.0.0`](https://renovatebot.com/diffs/npm/sinon/13.0.2/14.0.0) | [![age](https://badges.renovateapi.com/packages/npm/sinon/14.0.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/npm/sinon/14.0.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/npm/sinon/14.0.0/compatibility-slim/13.0.2)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/npm/sinon/14.0.0/confidence-slim/13.0.2)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

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

### [`v14.0.0`](https://togithub.com/sinonjs/sinon/blob/HEAD/CHANGES.md#&#8203;1400)

[Compare Source](https://togithub.com/sinonjs/sinon/compare/v13.0.2...v14.0.0)

-   [`c2bbd826`](https://togithub.com/sinonjs/sinon/commit/c2bbd82641444eb5b32822489ae40f185afbbf00)
    Drop node 12 (Morgan Roderick)
    > And embrace Node 18
    >
    > See https://nodejs.org/en/about/releases/

*Released by Morgan Roderick on 2022-05-07.*

</details>

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package.json

@@ -71,7 +71,7 @@
     "p-queue": "^6.6.1",
     "pack-n-play": "^1.0.0-2",
     "proxyquire": "^2.1.3",
-    "sinon": "^13.0.0",
+    "sinon": "^14.0.0",
     "ts-loader": "^8.0.0",
     "typescript": "^3.8.3",
     "webpack-cli": "^4.0.0"

samples/package.json

@@ -15,7 +15,7 @@
   },
   "dependencies": {
     "@google-cloud/datastore": "^6.6.2",
-    "sinon": "^13.0.0"
+    "sinon": "^14.0.0"
   },
   "devDependencies": {
     "chai": "^4.2.0",