[misc] Add optional parameter keepOffset to toISOString (#4357)
[misc] Add optional parameter keepOffset to toISOString (#4357)

Update the typescript definition file to include the optional parameter keepOffset which was introduced in 2.20.0

joelmheim/moment,moment/moment,OtkurBiz/moment,mj1856/moment,mj1856/moment,joelmheim/moment,PKRoma/moment,joelmheim/moment,julionc/moment,calebcauthon/moment,PKRoma/moment,ze-pequeno/moment,calebcauthon/moment,ze-pequeno/moment,PKRoma/moment,moment/moment,OtkurBiz/moment,julionc/moment,Oire/moment,moment/moment,mj1856/moment,ze-pequeno/moment,calebcauthon/moment,julionc/moment,Oire/moment,OtkurBiz/moment,Oire/moment