build(deps): update dependency discord.js to ~14.15.0

Author: renovate[bot]

package.json

@@ -17,7 +17,7 @@
     "@twurple/auth": "~7.1.0",
     "@zeepkist/graphql": "~1.26.0",
     "date-fns": "~3.6.0",
-    "discord.js": "~14.14.1",
+    "discord.js": "~14.15.0",
     "dotenv": "~16.4.0",
     "knex": "~3.1.0",
     "ky": "~1.2.0",