fix: Too many connections

package.json

@@ -1,6 +1,6 @@
 {
   "name": "muffinbot",
-  "version": "2.0.0-oreo.p240608a",
+  "version": "2.0.0-oreo.r240614a",
   "main": "dist/index.js",
   "private": true,
   "dependencies": {

src/modules/database/database.ts

@@ -22,9 +22,6 @@ export class MaaDatabase {
   }
 
   public async ping() {
-    this._database.getConnection().then(conn => {
-      conn.ping()
-      conn.release()
-    })
+    this._database.ping()
   }
 }