firefox version update; add 91.9.0-1.el7_9 remove 91.7.0-3.el7_9
Add latest EL-7.9 firefox version (91.9.0-1.el7_9), remove olders EL-7.9 firefox version (91.7.0-3.el7_9)
Add latest EL-7.9 firefox version (91.9.0-1.el7_9), remove olders EL-7.9 firefox version (91.7.0-3.el7_9)