Bump mysql2 in /backend in the prod-patch-updates group

Bumps the prod-patch-updates group in /backend with 1 update: [mysql2](https://github.com/sidorares/node-mysql2).


Updates `mysql2` from 3.16.2 to 3.16.3
- [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/v3.16.2...v3.16.3)

---
updated-dependencies:
- dependency-name: mysql2
  dependency-version: 3.16.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: prod-patch-updates
...

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

backend/package.json

@@ -27,7 +27,7 @@
 		"liquidjs": "10.24.0",
 		"lodash": "^4.17.23",
 		"moment": "^2.30.1",
-		"mysql2": "^3.16.2",
+		"mysql2": "^3.16.3",
 		"node-rsa": "^1.1.1",
 		"objection": "3.1.5",
 		"otplib": "^13.2.1",

backend/yarn.lock

@@ -1853,10 +1853,10 @@ ms@^2.0.0, ms@^2.1.1, ms@^2.1.3:
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.3.tgz#574c8138ce1d2b5861f0b44579dbadd60c6615b2"
   integrity sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA==
 
-mysql2@^3.16.2:
-  version "3.16.2"
-  resolved "https://registry.yarnpkg.com/mysql2/-/mysql2-3.16.2.tgz#b56d8917bfbc01af02f9c301029c019868b6ab6d"
-  integrity sha512-JsqBpYNy7pH20lGfPuSyRSIcCxSeAIwxWADpV64nP9KeyN3ZKpHZgjKXuBKsh7dH6FbOvf1bOgoVKjSUPXRMTw==
+mysql2@^3.16.3:
+  version "3.16.3"
+  resolved "https://registry.yarnpkg.com/mysql2/-/mysql2-3.16.3.tgz#59491bfa13f1979c2a87fd1ef68a3eb83fd58fcb"
+  integrity sha512-+3XhQEt4FEFuvGV0JjIDj4eP2OT/oIj/54dYvqhblnSzlfcxVOuj+cd15Xz6hsG4HU1a+A5+BA9gm0618C4z7A==
   dependencies:
     aws-ssl-profiles "^1.1.2"
     denque "^2.1.0"