Update yarn and updated node to latest LTS (14.15.1) (#5087)
Update yarn and updated node to latest LTS (14.15.1) (#5087)

(cherry picked from commit 9913e228a0896ba40fd717c80ce7d1122a96261b)

DanielWeber/jenkins,DanielWeber/jenkins,DanielWeber/jenkins,DanielWeber/jenkins,DanielWeber/jenkins,DanielWeber/jenkins,DanielWeber/jenkins