Bump mysql2 from 2.3.0 to 3.9.8

Bumps [mysql2](https://github.com/sidorares/node-mysql2) from 2.3.0 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@v2.3.0...v3.9.8)

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

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

Author: dependabot[bot]

example/monaco_editor/package.json

@@ -31,7 +31,7 @@
     "@types/ws": "^7.2.6",
     "css-loader": "^3.6.0",
     "file-loader": "^6.0.0",
-    "mysql2": "^2.1.0",
+    "mysql2": "^3.9.8",
     "npm-run-all": "^4.1.5",
     "sequelize": "^6.3.3",
     "sequelize-cli": "^6.4.1",

packages/server/package.json

@@ -45,7 +45,7 @@
     "@types/yargs": "^17.0.8",
     "cardinal": "^2.1.1",
     "jest": "^26.0.1",
-    "mysql2": "^2.3.0",
+    "mysql2": "^3.9.8",
     "node-ssh-forward": "^0.6.3",
     "pg": "^8.9.0",
     "sqlint": "^1.7.0",