build: remove commit message line length limit (#22252)
build: remove commit message line length limit (#22252)

Similar to https://github.com/angular/angular/pull/41157, removes the limit on commit message lines.
andrewseguin/material2,josephperrott/material2,andrewseguin/material2,mmalerba/material2,andrewseguin/material2,angular/components,DevVersion/material2,angular/components,mmalerba/material2,angular/components,DevVersion/material2,andrewseguin/material2,crisbeto/material2,angular/components,DevVersion/material2,andrewseguin/material2,crisbeto/material2,crisbeto/material2,mmalerba/material2,josephperrott/material2,DevVersion/material2,mmalerba/material2,crisbeto/material2,DevVersion/material2,josephperrott/material2,mmalerba/material2,josephperrott/material2,josephperrott/material2