Bump formidable, superagent and supertest

Bumps [formidable](https://github.com/node-formidable/formidable) to 3.5.1 and updates ancestor dependencies [formidable](https://github.com/node-formidable/formidable), [superagent](https://github.com/ladjs/superagent) and [supertest](https://github.com/ladjs/supertest). These dependencies need to be updated together.


Updates `formidable` from 2.1.2 to 3.5.1
- [Release notes](https://github.com/node-formidable/formidable/releases)
- [Changelog](https://github.com/node-formidable/formidable/blob/master/CHANGELOG.md)
- [Commits](https://github.com/node-formidable/formidable/commits/v3.5.1)

Updates `superagent` from 8.1.2 to 9.0.1
- [Release notes](https://github.com/ladjs/superagent/releases)
- [Changelog](https://github.com/ladjs/superagent/blob/master/HISTORY.md)
- [Commits](https://github.com/ladjs/superagent/compare/v8.1.2...v9.0.1)

Updates `supertest` from 6.3.4 to 7.0.0
- [Release notes](https://github.com/ladjs/supertest/releases)
- [Commits](https://github.com/ladjs/supertest/compare/v6.3.4...v7.0.0)

---
updated-dependencies:
- dependency-name: formidable
  dependency-type: indirect
- dependency-name: superagent
  dependency-type: direct:production
- dependency-name: supertest
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -115,7 +115,7 @@
     "react-frame-component": "^4.1.3",
     "react-router-dom": "6.23.0",
     "sanitize-filename": "1.6.3",
-    "superagent": "^8.1.2",
+    "superagent": "^9.0.1",
     "vitreum": "git+https://git@github.com/calculuschild/vitreum.git"
   },
   "devDependencies": {
@@ -129,6 +129,6 @@
     "stylelint-config-recess-order": "^4.6.0",
     "stylelint-config-recommended": "^13.0.0",
     "stylelint-stylistic": "^0.4.3",
-    "supertest": "^6.3.4"
+    "supertest": "^7.0.0"
   }
 }