build(deps): bump @tootallnate/once, http-proxy-agent and jest

Removes [@tootallnate/once](https://github.com/TooTallNate/once). It's no longer used after updating ancestor dependencies [@tootallnate/once](https://github.com/TooTallNate/once), [http-proxy-agent](https://github.com/TooTallNate/proxy-agents/tree/HEAD/packages/http-proxy-agent) and [jest](https://github.com/jestjs/jest/tree/HEAD/packages/jest). These dependencies need to be updated together.


Removes `@tootallnate/once`

Updates `http-proxy-agent` from 5.0.0 to 7.0.2
- [Release notes](https://github.com/TooTallNate/proxy-agents/releases)
- [Changelog](https://github.com/TooTallNate/proxy-agents/blob/main/packages/http-proxy-agent/CHANGELOG.md)
- [Commits](https://github.com/TooTallNate/proxy-agents/commits/[email protected]/packages/http-proxy-agent)

Updates `jest` from 27.5.1 to 30.2.0
- [Release notes](https://github.com/jestjs/jest/releases)
- [Changelog](https://github.com/jestjs/jest/blob/main/CHANGELOG.md)
- [Commits](https://github.com/jestjs/jest/commits/v30.2.0/packages/jest)

---
updated-dependencies:
- dependency-name: "@tootallnate/once"
  dependency-version: 
  dependency-type: indirect
- dependency-name: http-proxy-agent
  dependency-version: 7.0.2
  dependency-type: direct:production
- dependency-name: jest
  dependency-version: 30.2.0
  dependency-type: direct:development
...

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

package.json

@@ -36,7 +36,7 @@
     "@octokit/core": "^6.1.6",
     "@octokit/plugin-paginate-rest": "^11.6.0",
     "@octokit/plugin-rest-endpoint-methods": "^6.8.1",
-    "http-proxy-agent": "^5.0.0",
+    "http-proxy-agent": "^7.0.2",
     "https-proxy-agent": "^5.0.1"
   },
   "devDependencies": {
@@ -50,7 +50,7 @@
     "eslint-plugin-github": "^4.10.2",
     "eslint-plugin-jest": "^25.7.0",
     "eslint-plugin-prettier": "^5.5.5",
-    "jest": "^27.5.1",
+    "jest": "^30.2.0",
     "jest-circus": "^27.5.1",
     "js-yaml": "^4.1.1",
     "prettier": "^3.8.1",