fix(deps): bump serverful from 1.4.88 to 1.4.89

Bumps [serverful](https://github.com/hfreire/serverful) from 1.4.88 to 1.4.89.
- [Release notes](https://github.com/hfreire/serverful/releases)
- [Commits](hfreire/serverful@v1.4.88...v1.4.89)

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

package.json

@@ -49,7 +49,7 @@
     "request-on-steroids": "1.1.104",
     "rxjs": "5.5.12",
     "sequelize": "5.21.13",
-    "serverful": "1.4.88",
+    "serverful": "1.4.89",
     "sharp": "^0.26.3",
     "sqlite3": "4.2.0",
     "tinder-wrapper": "1.0.79",