please update depencencies avoid error on build

[MkLHX]

I try to use imagemin and imagemin-webp on wepback project. And then still trying to do something good, i get error about dependency exec-buffer. It's give me an error:

This dependency was not found:

* child_process in ./node_modules/exec-buffer/node_modules/cross-spawn/index.js, ./node_modules/exec-buffer/node_modules/execa/index.js 
and 1 other

Try to manage it my self but at the end it seems to be a dependencies error of depends packages of imagemin....

node v12.16.1 npm v6.14.4 yarn v1.22.4 windows 10