chore: bump proxy-agent from 5.0.0 to 6.2.1

Bumps [proxy-agent](https://github.com/TooTallNate/proxy-agents/tree/HEAD/packages/proxy-agent) from 5.0.0 to 6.2.1.
- [Release notes](https://github.com/TooTallNate/proxy-agents/releases)
- [Changelog](https://github.com/TooTallNate/proxy-agents/blob/main/packages/proxy-agent/CHANGELOG.md)
- [Commits](https://github.com/TooTallNate/proxy-agents/commits/[email protected]/packages/proxy-agent)

---
updated-dependencies:
- dependency-name: proxy-agent
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package.json

@@ -98,7 +98,7 @@
     "js-yaml": "^4.0.0",
     "limiter": "^2.1.0",
     "pem": "^1.14.2",
-    "proxy-agent": "^5.0.0",
+    "proxy-agent": "^6.2.1",
     "qs": "6.11.0",
     "rotating-file-stream": "^3.0.0",
     "safe-buffer": "^5.1.1",