Bump sequelize from 5.21.3 to 5.21.4

Bumps [sequelize](https://github.com/sequelize/sequelize) from 5.21.3 to 5.21.4.
- [Release notes](https://github.com/sequelize/sequelize/releases)
- [Commits](https://github.com/sequelize/sequelize/compare/v5.21.3...v5.21.4)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

package.json

@@ -52,7 +52,7 @@
     "pg": "^7.17.1",
     "playmusic": "^2.3.0",
     "sass-loader": "^8.0.2",
-    "sequelize": "^5.21.3",
+    "sequelize": "^5.21.4",
     "sequelize-cli-esm": "^5.0.6",
     "spotify-web-api-node": "^4.0.0",
     "superagent": "^5.2.1",

yarn.lock

@@ -7153,10 +7153,10 @@ sequelize-pool@^2.3.0:
   resolved "https://registry.yarnpkg.com/sequelize-pool/-/sequelize-pool-2.3.0.tgz#64f1fe8744228172c474f530604b6133be64993d"
   integrity sha512-Ibz08vnXvkZ8LJTiUOxRcj1Ckdn7qafNZ2t59jYHMX1VIebTAOYefWdRYFt6z6+hy52WGthAHAoLc9hvk3onqA==
 
-sequelize@^5.21.3:
-  version "5.21.3"
-  resolved "https://registry.yarnpkg.com/sequelize/-/sequelize-5.21.3.tgz#f8a6fa0245f8995d70849e4da00c2c7c9aa9f569"
-  integrity sha512-ptdeAxwTY0zbj7AK8m+SH3z52uHVrt/qmOTSIGo/kyfnSp3h5HeKlywkJf5GEk09kuRrPHfWARVSXH1W3IGU7g==
+sequelize@^5.21.4:
+  version "5.21.4"
+  resolved "https://registry.yarnpkg.com/sequelize/-/sequelize-5.21.4.tgz#a49597dbd7862e4e1fb8ec819de04705d06d9d17"
+  integrity sha512-Ap1pZpvKb0o3H1HuBygMi9LfCJnwYLkXNBoISqkMJ17X6MbXuOB0Pz+XazawodU1uaMl9osCSrP+Uklkc6pgQg==
   dependencies:
     bluebird "^3.5.0"
     cls-bluebird "^2.1.0"