fix(deps): update dependency mysql2 to v3.9.7 [security]

Author: renovate[bot]

package.json

@@ -96,7 +96,7 @@
     "koa-query-pretty": "0.3.0",
     "koa-router": "12.0.0",
     "lodash": "4.17.21",
-    "mysql2": "3.5.0",
+    "mysql2": "3.9.7",
     "nconf": "0.12.1",
     "nconf-yaml": "1.0.2",
     "nodemailer": "6.9.3",

yarn.lock

@@ -7318,7 +7318,7 @@ __metadata:
     koa-router: "npm:12.0.0"
     lint-staged: "npm:14.0.1"
     lodash: "npm:4.17.21"
-    mysql2: "npm:3.5.0"
+    mysql2: "npm:3.9.7"
     nconf: "npm:0.12.1"
     nconf-yaml: "npm:1.0.2"
     nodemailer: "npm:6.9.3"
@@ -9959,9 +9959,9 @@ __metadata:
   languageName: node
   linkType: hard
 
-"mysql2@npm:3.5.0":
-  version: 3.5.0
-  resolution: "mysql2@npm:3.5.0"
+"mysql2@npm:3.9.7":
+  version: 3.9.7
+  resolution: "mysql2@npm:3.9.7"
   dependencies:
     denque: "npm:^2.1.0"
     generate-function: "npm:^2.3.1"
@@ -9971,7 +9971,7 @@ __metadata:
     named-placeholders: "npm:^1.1.3"
     seq-queue: "npm:^0.0.5"
     sqlstring: "npm:^2.3.2"
-  checksum: b0b7347429d3f201b2cf96282f20b38b46b292cd90c735ae8ad96820c9f28f87058945d92086d92a43f91b2efab372d8d9c9078587f837e1f0c94ab5a6b4e2ae
+  checksum: c9cae85339b0478fdf1ff6242dfc4574e8d53c3edf207cc1b052ecfc95fec3b38ab8cc2e63ce6e5839978231dea50d563297345ec7bd1d5fbeeda1ecf0de0cef
   languageName: node
   linkType: hard