fix(deps): update dependency @google-cloud/projectify to v4 (#1800)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [@google-cloud/projectify](https://togithub.com/googleapis/nodejs-projectify) | [`^3.0.0` -> `^4.0.0`](https://renovatebot.com/diffs/npm/@google-cloud%2fprojectify/3.0.0/4.0.0) | [![age](https://developer.mend.io/api/mc/badges/age/npm/@google-cloud%2fprojectify/4.0.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/@google-cloud%2fprojectify/4.0.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/@google-cloud%2fprojectify/3.0.0/4.0.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/@google-cloud%2fprojectify/3.0.0/4.0.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

<details>
<summary>googleapis/nodejs-projectify (@&#8203;google-cloud/projectify)</summary>

### [`v4.0.0`](https://togithub.com/googleapis/nodejs-projectify/blob/HEAD/CHANGELOG.md#400-2023-08-09)

[Compare Source](https://togithub.com/googleapis/nodejs-projectify/compare/v3.0.0...v4.0.0)

##### ⚠ BREAKING CHANGES

-   upgrade to Node 14 ([#&#8203;318](https://togithub.com/googleapis/nodejs-projectify/issues/318))

##### Bug Fixes

-   Remove pip install statements ([#&#8203;1546](https://togithub.com/googleapis/nodejs-projectify/issues/1546)) ([#&#8203;304](https://togithub.com/googleapis/nodejs-projectify/issues/304)) ([94cfff6](https://togithub.com/googleapis/nodejs-projectify/commit/94cfff665b7c6b8916b5c59e1c7a3cca7ff29303))

##### Miscellaneous Chores

-   Upgrade to Node 14 ([#&#8203;318](https://togithub.com/googleapis/nodejs-projectify/issues/318)) ([6e9da4d](https://togithub.com/googleapis/nodejs-projectify/commit/6e9da4db77fab7ed6876e755a72156960b376d57))

</details>

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package.json

@@ -50,7 +50,7 @@
   "dependencies": {
     "@google-cloud/paginator": "^5.0.0",
     "@google-cloud/precise-date": "^3.0.1",
-    "@google-cloud/projectify": "^3.0.0",
+    "@google-cloud/projectify": "^4.0.0",
     "@google-cloud/promisify": "^4.0.0",
     "@opentelemetry/api": "^1.0.0",
     "@opentelemetry/semantic-conventions": "~1.3.0",