Merge pull request #19 from miyabayt/renovate/mysql2-2.x

Update dependency mysql2 to v2.3.3

Author: miyabayt

package-lock.json

@@ -27,7 +27,7 @@
     "moment": "2.29.4",
     "moment-timezone": "0.5.37",
     "morgan": "1.9.1",
-    "mysql2": "2.2.5",
+    "mysql2": "2.3.3",
     "pug": "3.0.2",
     "qs": "6.10.1",
     "respond.js": "1.4.2",