increate importlib_metadata minimum version for python < 3.11

importlib in the standard library (for python < 3.11) and
importlib_metadata (<4.11.4) return duplicate entry points in some cases.
This leads to duplication of extensions in entry_points.get_extensions.

remove use of importlib for python 3.10 and require
use of importlib_metadata >= 4.11.4 for python < 3.11

fixes issue #1254

CHANGES.rst

@@ -4,6 +4,7 @@
 The ASDF Standard is at v1.6.0
 
 - Fix issue #1256, where ``enum`` could not be used on tagged objects. [#1257]
+- Update minimum importlib_metadata version to 4.11.4 for python < 3.11 [#1260]
 
 2.14.1 (2022-11-23)
 -------------------

asdf/entry_points.py

@@ -1,7 +1,7 @@
 import sys
 import warnings
 
-if sys.version_info < (3, 10):
+if sys.version_info < (3, 11):
     from importlib_metadata import entry_points
 else:
     from importlib.metadata import entry_points

asdf/tests/test_entry_points.py

@@ -2,7 +2,7 @@
 
 import pytest
 
-if sys.version_info < (3, 10):
+if sys.version_info < (3, 11):
     import importlib_metadata as metadata
 else:
     import importlib.metadata as metadata

asdf/util.py

@@ -15,7 +15,7 @@
 
 from . import constants
 
-if sys.version_info < (3, 10):
+if sys.version_info < (3, 11):
     from importlib_metadata import packages_distributions
 else:
     from importlib.metadata import packages_distributions

pyproject.toml

@@ -18,7 +18,7 @@ dependencies = [
     'asdf-transform-schemas >=0.2.2',
     'asdf-unit-schemas >= 0.1.0',
     'importlib_resources >=3; python_version <"3.9"',
-    'importlib-metadata >=3; python_version <"3.10"',
+    'importlib-metadata >=4.11.4; python_version <"3.11"',
     'jmespath >=0.6.2',
     'jsonschema >=4.0.1',
     'numpy >=1.18',