build(deps-dev): bump fetch-mock from 12.5.3 to 12.5.4

Bumps [fetch-mock](https://github.com/wheresrhys/fetch-mock/tree/HEAD/packages/fetch-mock) from 12.5.3 to 12.5.4.
- [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-v12.5.4/packages/fetch-mock)

---
updated-dependencies:
- dependency-name: fetch-mock
  dependency-version: 12.5.4
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

package-lock.json

@@ -29,7 +29,7 @@
   },
   "devDependencies": {
     "eventsource": "^4.0.0",
-    "fetch-mock": "^12.5.3",
+    "fetch-mock": "^12.5.4",
     "nock": "^14.0.10",
     "nodemon": "^3.1.10",
     "standard": "^17.1.2",