Replace `tmpdir` with `tmp_path` in `modeling` tests
Replace `tmpdir` with `tmp_path` in `modeling` tests

larrybradley/astropy,pllim/astropy,mhvk/astropy,lpsinger/astropy,pllim/astropy,pllim/astropy,lpsinger/astropy,astropy/astropy,lpsinger/astropy,astropy/astropy,astropy/astropy,mhvk/astropy,lpsinger/astropy,larrybradley/astropy,pllim/astropy,pllim/astropy,mhvk/astropy,mhvk/astropy,mhvk/astropy,larrybradley/astropy,larrybradley/astropy,larrybradley/astropy,astropy/astropy,astropy/astropy,lpsinger/astropy