karma.conf.js: switch to `CI === true`. (#28588)
karma.conf.js: switch to `CI === true`. (#28588)


peterblazejewicz/bootstrap,coliff/bootstrap,kvlsrg/bootstrap,GerHobbelt/bootstrap,peterblazejewicz/bootstrap,inway/bootstrap,tjkohli/bootstrap,inway/bootstrap,inway/bootstrap,GerHobbelt/bootstrap,tagliala/bootstrap,zalog/bootstrap,tagliala/bootstrap,zalog/bootstrap,stanwmusic/bootstrap,m5o/bootstrap,twbs/bootstrap,m5o/bootstrap,coliff/bootstrap,stanwmusic/bootstrap,stanwmusic/bootstrap,tjkohli/bootstrap,zalog/bootstrap,twbs/bootstrap,tagliala/bootstrap,stanwmusic/bootstrap,kvlsrg/bootstrap,kvlsrg/bootstrap,GerHobbelt/bootstrap,peterblazejewicz/bootstrap