Bump semver and nodemon in /Web-Dev-Guide/employees-management

Bumps [semver](https://github.com/npm/node-semver) to 7.6.0 and updates ancestor dependency [nodemon](https://github.com/remy/nodemon). These dependencies need to be updated together.


Updates `semver` from 7.0.0 to 7.6.0
- [Release notes](https://github.com/npm/node-semver/releases)
- [Changelog](https://github.com/npm/node-semver/blob/main/CHANGELOG.md)
- [Commits](npm/node-semver@v7.0.0...v7.6.0)

Updates `nodemon` from 2.0.22 to 3.1.0
- [Release notes](https://github.com/remy/nodemon/releases)
- [Commits](remy/nodemon@v2.0.22...v3.1.0)

---
updated-dependencies:
- dependency-name: semver
  dependency-type: indirect
- dependency-name: nodemon
  dependency-type: direct:production
...

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

Web-Dev-Guide/employees-management/package.json

@@ -21,6 +21,6 @@
     "express": "^4.19.2",
     "mongoose": "^5.13.20",
     "morgan": "^1.10.0",
-    "nodemon": "^2.0.22"
+    "nodemon": "^3.1.0"
   }
 }