Bump mysql2 in the npm_and_yarn group across 1 directory

Bumps the npm_and_yarn group with 1 update in the / directory: [mysql2](https://github.com/sidorares/node-mysql2).


Updates `mysql2` from 3.6.3 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@v3.6.3...v3.9.4)

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

Signed-off-by: dependabot[bot] <[email protected]>

apps/bot/package.json

@@ -19,7 +19,7 @@
     "dotenv": "^16.3.1",
     "kysely": "^0.26.1",
     "lru-cache": "^10.0.0",
-    "mysql2": "^3.5.2",
+    "mysql2": "^3.9.4",
     "ts-dedent": "^2.2.0",
     "zod": "^3.21.4"
   },

packages/db/package.json

@@ -23,7 +23,7 @@
     "@planetscale/database": "^1.8.0",
     "kysely": "^0.26.1",
     "kysely-planetscale": "^1.3.0",
-    "mysql2": "^3.5.2"
+    "mysql2": "^3.9.4"
   },
   "devDependencies": {
     "@nextjs-forum/tsconfig": "workspace:*",