fix(RequestHandler): only retry once on 5xx (#2471)
fix(RequestHandler): only retry once on 5xx (#2471)


SpaceEEC/discord.js,SpaceEEC/discord.js,Lewdcario/discord.js,SpaceEEC/discord.js,Lewdcario/discord.js,hydrabolt/discord.js,hydrabolt/discord.js,Lewdcario/discord.js,appellation/discord.js,appellation/discord.js,hydrabolt/discord.js,appellation/discord.js