Bump mysql2 from 3.5.2 to 3.9.7 in /packages/server

Bumps [mysql2](https://github.com/sidorares/node-mysql2) from 3.5.2 to 3.9.7.
- [Release notes](https://github.com/sidorares/node-mysql2/releases)
- [Changelog](https://github.com/sidorares/node-mysql2/blob/master/Changelog.md)
- [Commits](https://github.com/sidorares/node-mysql2/compare/v3.5.2...v3.9.7)

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

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

packages/server/package.json

@@ -98,7 +98,7 @@
     "memorystream": "0.3.1",
     "mongodb": "^6.3.0",
     "mssql": "10.0.1",
-    "mysql2": "3.5.2",
+    "mysql2": "3.9.7",
     "node-fetch": "2.6.7",
     "object-sizeof": "2.6.1",
     "open": "8.4.0",