Update dependency mysql2 to v3 [SECURITY]

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

packages/backend-common/package.json

@@ -139,7 +139,7 @@
     "http-errors": "^2.0.0",
     "mock-fs": "^5.1.0",
     "msw": "^1.0.0",
-    "mysql2": "^2.2.5",
+    "mysql2": "^3.0.0",
     "recursive-readdir": "^2.2.2",
     "supertest": "^6.1.3"
   },

packages/backend-test-utils/package.json

@@ -52,7 +52,7 @@
     "express": "^4.17.1",
     "knex": "^2.0.0",
     "msw": "^1.0.0",
-    "mysql2": "^2.2.5",
+    "mysql2": "^3.0.0",
     "pg": "^8.3.0",
     "testcontainers": "^8.1.2",
     "uuid": "^8.0.0"