chore(deps): bump mysql2 from 3.6.5 to 3.9.4

Bumps [mysql2](https://github.com/sidorares/node-mysql2) from 3.6.5 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@v3.6.5...v3.9.4)

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

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

package.json

@@ -155,7 +155,7 @@
     "lodash": "^4.17.21",
     "moment-timezone": "^0.5.43",
     "morgan": "^1.10.0",
-    "mysql2": "^3.4.0",
+    "mysql2": "^3.9.4",
     "node-cache": "^5.1.2",
     "node-fetch": "2.6.7",
     "node-geocoder": "^4.2.0",

yarn.lock

@@ -6856,10 +6856,10 @@ [email protected]:
     seq-queue "^0.0.5"
     sqlstring "^2.3.2"
 
-mysql2@^3.4.0:
-  version "3.6.5"
-  resolved "https://registry.yarnpkg.com/mysql2/-/mysql2-3.6.5.tgz#46bfed7c1c1e4288283f8c8f1c4a5f20669dd3d6"
-  integrity sha512-pS/KqIb0xlXmtmqEuTvBXTmLoQ5LmAz5NW/r8UyQ1ldvnprNEj3P9GbmuQQ2J0A4LO+ynotGi6TbscPa8OUb+w==
+mysql2@^3.9.4:
+  version "3.9.4"
+  resolved "https://registry.yarnpkg.com/mysql2/-/mysql2-3.9.4.tgz#0d4f666015f8ed213aa6f2f5e59065eb99d7c3de"
+  integrity sha512-OEESQuwxMza803knC1YSt7NMuc1BrK9j7gZhCSs2WAyxr1vfiI7QLaLOKTh5c9SWGz98qVyQUbK8/WckevNQhg==
   dependencies:
     denque "^2.1.0"
     generate-function "^2.3.1"