Bump mysql2 from 2.3.3 to 3.9.8

Bumps [mysql2](https://github.com/sidorares/node-mysql2) from 2.3.3 to 3.9.8.
- [Release notes](https://github.com/sidorares/node-mysql2/releases)
- [Changelog](https://github.com/sidorares/node-mysql2/blob/master/Changelog.md)
- [Commits](sidorares/node-mysql2@v2.3.3...v3.9.8)

---
updated-dependencies:
- dependency-name: mysql2
  dependency-type: direct:production
...

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

package.json

@@ -12,7 +12,7 @@
         "express": "^4.18.1",
         "json-sql": "^0.5.0",
         "mongoose": "^6.12.0",
-        "mysql2": "^2.3.3"
+        "mysql2": "^3.9.8"
     },
     "scripts": {
         "test": "jest",