build(deps-dev): bump fetch-mock from 12.3.0 to 12.4.0

Bumps [fetch-mock](https://github.com/wheresrhys/fetch-mock/tree/HEAD/packages/fetch-mock) from 12.3.0 to 12.4.0.
- [Release notes](https://github.com/wheresrhys/fetch-mock/releases)
- [Changelog](https://github.com/wheresrhys/fetch-mock/blob/main/packages/fetch-mock/CHANGELOG.md)
- [Commits](https://github.com/wheresrhys/fetch-mock/commits/fetch-mock-v12.4.0/packages/fetch-mock)

---
updated-dependencies:
- dependency-name: fetch-mock
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package-lock.json

@@ -29,7 +29,7 @@
   },
   "devDependencies": {
     "eventsource": "^3.0.5",
-    "fetch-mock": "^12.3.0",
+    "fetch-mock": "^12.4.0",
     "nock": "^14.0.1",
     "nodemon": "^3.1.9",
     "standard": "^17.1.2",