Update .gitignore
Update .gitignore

Co-authored-by: P. L. Lim <01b0ff1ff6bf52826e8c867754553ed4806180a6@users.noreply.github.com>
lpsinger/astropy,dhomeier/astropy,astropy/astropy,lpsinger/astropy,astropy/astropy,mhvk/astropy,pllim/astropy,larrybradley/astropy,astropy/astropy,pllim/astropy,pllim/astropy,StuartLittlefair/astropy,dhomeier/astropy,saimn/astropy,StuartLittlefair/astropy,lpsinger/astropy,larrybradley/astropy,lpsinger/astropy,mhvk/astropy,mhvk/astropy,aleksandr-bakanov/astropy,aleksandr-bakanov/astropy,larrybradley/astropy,larrybradley/astropy,saimn/astropy,StuartLittlefair/astropy,pllim/astropy,saimn/astropy,pllim/astropy,mhvk/astropy,aleksandr-bakanov/astropy,lpsinger/astropy,astropy/astropy,StuartLittlefair/astropy,saimn/astropy,mhvk/astropy,dhomeier/astropy,StuartLittlefair/astropy,dhomeier/astropy,larrybradley/astropy,astropy/astropy,saimn/astropy,aleksandr-bakanov/astropy,dhomeier/astropy