Ignoring deprecation coming from astropy <5

Author: bsipocz

setup.cfg

@@ -57,6 +57,8 @@ filterwarnings =
 # Upstream, remove when fixed, PRs have been opened
     ignore::DeprecationWarning:pyvo
     ignore::DeprecationWarning:regions
+# Should ignore these for astropy<5.0
+    ignore:getName|currentThread:DeprecationWarning:astropy
 # This should be cleared once we requre astropy>=4.1
     ignore:tostring\(\) is deprecated. Use tobytes:DeprecationWarning:astropy
 markers =