Bump esmock from 2.5.1 to 2.6.0 in /server

Bumps [esmock](https://github.com/iambumblehead/esmock) from 2.5.1 to 2.6.0.
- [Release notes](https://github.com/iambumblehead/esmock/releases)
- [Changelog](https://github.com/iambumblehead/esmock/blob/main/CHANGELOG.md)
- [Commits](iambumblehead/esmock@v2.5.1...v2.6.0)

---
updated-dependencies:
- dependency-name: esmock
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

server/package.json

@@ -21,7 +21,7 @@
     "cors": "^2.8.5",
     "dotenv": "^16.3.1",
     "errorhandler": "^1.5.1",
-    "esmock": "^2.5.1",
+    "esmock": "^2.6.0",
     "express": "^4.18.2",
     "express-jwt": "^8.4.1",
     "express-rate-limit": "^7.1.1",