build(deps): bump mysql2 from 3.2.4 to 3.9.4

Bumps [mysql2](https://github.com/sidorares/node-mysql2) from 3.2.4 to 3.9.4.
- [Release notes](https://github.com/sidorares/node-mysql2/releases)
- [Changelog](https://github.com/sidorares/node-mysql2/blob/master/Changelog.md)
- [Commits](sidorares/node-mysql2@v3.2.4...v3.9.4)

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

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

package.json

@@ -24,7 +24,7 @@
     "eslint-config-airbnb": "^19.0.4",
     "express": "^4.18.2",
     "jsonwebtoken": "^9.0.0",
-    "mysql2": "^3.2.4"
+    "mysql2": "^3.9.4"
   },
   "devDependencies": {
     "eslint": "^8.39.0",