build(deps-dev): Bump proxy from 2.2.0 to 4.0.0 (#464)

Bumps [proxy](https://github.com/TooTallNate/proxy-agents/tree/HEAD/packages/proxy) from 2.2.0 to 4.0.0.
- [Release notes](https://github.com/TooTallNate/proxy-agents/releases)
- [Changelog](https://github.com/TooTallNate/proxy-agents/blob/main/packages/proxy/CHANGELOG.md)
- [Commits](https://github.com/TooTallNate/proxy-agents/commits/proxy@4.0.0/packages/proxy)

---
updated-dependencies:
- dependency-name: proxy
  dependency-version: 4.0.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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Author: dependabot[bot]

package.json

@@ -70,7 +70,7 @@
     "h2url": "^0.2.0",
     "neostandard": "^0.13.0",
     "nock": "^14.0.0",
-    "proxy": "^2.1.1",
+    "proxy": "^4.0.0",
     "proxyquire": "^2.1.3",
     "split2": "^4.2.0",
     "tsd": "^0.33.0"