MNT: Unpin jsonschema

because asdf released with the pin upstream.

Author: pllim

setup.cfg

@@ -41,8 +41,6 @@ install_requires =
     idna
     # vispy is an indirect dependency, but older vispy's don't play nice with jdaviz install
     vispy>=0.6.5
-    # this is needed for asdf, see https://github.com/asdf-format/asdf/pull/1171
-    jsonschema<4.10
     asdf>=2.7.4
     gwcs>=0.16.1
     regions>=0.6