build(docs-infra): add more checks to verify contributors.json data (#40369)
build(docs-infra): add more checks to verify contributors.json data (#40369)

This commit adds extra steps to verify contributors.json data, such as checking `lead` and `mentor` field as well as
making sure the list is sorted alphabetically.

PR Close #40369

ocombe/angular,gkalpak/angular,angular-indonesia/angular,angular/angular,IdeaBlade/angular,gkalpak/angular,IdeaBlade/angular,brandonroberts/angular,gkalpak/angular,shairez/angular,brandonroberts/angular,shairez/angular,gkalpak/angular,ocombe/angular,angular-indonesia/angular,angular/angular,angular-indonesia/angular,shairez/angular,blesh/angular,alxhub/angular,manekinekko/angular,blesh/angular,brandonroberts/angular,blesh/angular,IdeaBlade/angular,shairez/angular,IdeaBlade/angular,blesh/angular,JiaLiPassion/angular,ocombe/angular,mgechev/angular,mgechev/angular,brandonroberts/angular,mgechev/angular,alxhub/angular,mgechev/angular,manekinekko/angular,brandonroberts/angular,shairez/angular,brandonroberts/angular,angular-indonesia/angular,gnomeontherun/angular,gnomeontherun/angular,manekinekko/angular,manekinekko/angular,angular/angular,JiaLiPassion/angular,JiaLiPassion/angular,mgechev/angular,gnomeontherun/angular,alxhub/angular,angular/angular,ocombe/angular,ocombe/angular,alxhub/angular,blesh/angular,alxhub/angular,gnomeontherun/angular,JiaLiPassion/angular,manekinekko/angular,ocombe/angular,IdeaBlade/angular,manekinekko/angular