build: update actions/checkout action to v3
build: update actions/checkout action to v3

geofffilippi/angular-cli,clydin/angular-cli,clydin/angular-cli,geofffilippi/angular-cli,angular/angular-cli,clydin/angular-cli,angular/angular-cli,clydin/angular-cli,geofffilippi/angular-cli,angular/angular-cli,angular/angular-cli,geofffilippi/angular-cli