fix security issues in the react-express-mysql sample

Signed-off-by: Guillaume Lours <guillaume.lours@docker.com>

react-express-mysql/backend/package.json

@@ -15,7 +15,7 @@
   },
   "dependencies": {
     "express": "^4.17.1",
-    "knex": "^0.20.13",
+    "knex": "^0.95.11",
     "morgan": "^1.10.0",
     "mysql2": "^2.1.0"
   },
@@ -23,7 +23,7 @@
     "chai": "^4.2.0",
     "chai-http": "^4.3.0",
     "cross-env": "^7.0.2",
-    "mocha": "^7.1.1",
+    "mocha": "^9.1.2",
     "nodemon": "^2.0.4"
   }
 }