Make python2-astropy dropped, and suggest to use python-astropy (with python3-astropy subpackage) instead

Author: irushchyshyn

data/fedora-update.yaml

@@ -326,6 +326,10 @@ python2:
     note: |
       This is the Python 2 package.
       Please port to Python 3.
+python2-astropy:
+    status: dropped
+    note: |
+        Replacement: `python-astropy`
 python-aexpect:
     note: |
         Currently, only the Python 2 based /usr/bin/aexpect-helper