ci: bump cron from 3.1.7 to 3.1.9

Bumps [cron](https://github.com/kelektiv/node-cron) from 3.1.7 to 3.1.9.
- [Release notes](https://github.com/kelektiv/node-cron/releases)
- [Changelog](https://github.com/kelektiv/node-cron/blob/main/CHANGELOG.md)
- [Commits](kelektiv/node-cron@v3.1.7...v3.1.9)

---
updated-dependencies:
- dependency-name: cron
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

package.json

@@ -48,7 +48,7 @@
     "bluebird": "^3.7.2",
     "bufferutil": "^4.0.8",
     "colors": "1.4.0",
-    "cron": "^3.1.7",
+    "cron": "^3.1.9",
     "dayjs": "^1.11.13",
     "decache": "^4.6.2",
     "discord.js": "^13.17.1",