Require gwcs >= 0.22.1 (#219)

* Require gwcs >= 0.22.1
* Update min astropy version to match min gwcs version.

Author: schlafly

pyproject.toml

@@ -17,13 +17,13 @@ classifiers = [
 ]
 dependencies = [
     "asdf >=3.3.0",
-    "astropy >=5.3",
+    "astropy >=6.0",
     "crds >=11.16.21",
     "defusedxml >=0.5.0",
     "galsim >=2.5.1",
     "rad >=0.23.0",
     "roman_datamodels >=0.23.0",
-    "gwcs >=0.20.0, <0.24.0",
+    "gwcs >=0.22.1, <0.24.0",
     "jsonschema >=4.8",
     "numpy >=1.24",
     "stpsf >=2.0.0",