package.json: fix clean-css level switch (#32097)
package.json: fix clean-css level switch (#32097)


twbs/bootstrap,inway/bootstrap,twbs/bootstrap,GerHobbelt/bootstrap,tjkohli/bootstrap,GerHobbelt/bootstrap,tjkohli/bootstrap,inway/bootstrap,m5o/bootstrap,GerHobbelt/bootstrap,inway/bootstrap,coliff/bootstrap,coliff/bootstrap,m5o/bootstrap