GUI tests: CPython 3.9 CI failure for macOS: macOS 11 (1107) or later required, have instead 11 (1106) ! #97032

test_write_stdout (idlelib.idle_test.test_squeezer.SqueezerTest)
macOS 11 (1107) or later required, have instead 11 (1106) !
Fatal Python error: Aborted

Current thread 0x000000010df4ee00 (most recent call first):
  File "/Users/runner/work/cpython/cpython/Lib/tkinter/__init__.py", line 2270 in __init__
  File "/Users/runner/work/cpython/cpython/Lib/idlelib/macosx.py", line 23 in _init_tk_type
  File "/Users/runner/work/cpython/cpython/Lib/idlelib/macosx.py", line 42 in isAquaTk
Test Squeezer's overriding of the EditorWindow's write() method. ... 
  File "/Users/runner/work/cpython/cpython/Lib/idlelib/squeezer.py", line 116 in __init__
  File "/Users/runner/work/cpython/cpython/Lib/idlelib/squeezer.py", line 260 in mywrite
  File "/Users/runner/work/cpython/cpython/Lib/idlelib/idle_test/test_squeezer.py", line 192 in test_write_stdout
  File "/Users/runner/work/cpython/cpython/Lib/unittest/case.py", line 550 in _callTestMethod
  File "/Users/runner/work/cpython/cpython/Lib/unittest/case.py", line 592 in run
  File "/Users/runner/work/cpython/cpython/Lib/unittest/case.py", line 651 in __call__
  File "/Users/runner/work/cpython/cpython/Lib/unittest/suite.py", line 122 in run
  File "/Users/runner/work/cpython/cpython/Lib/unittest/suite.py", line 84 in __call__
  File "/Users/runner/work/cpython/cpython/Lib/unittest/suite.py", line 122 in run
  File "/Users/runner/work/cpython/cpython/Lib/unittest/suite.py", line 84 in __call__
  File "/Users/runner/work/cpython/cpython/Lib/unittest/suite.py", line 122 in run
  File "/Users/runner/work/cpython/cpython/Lib/unittest/suite.py", line 84 in __call__
  File "/Users/runner/work/cpython/cpython/Lib/unittest/suite.py", line 122 in run
  File "/Users/runner/work/cpython/cpython/Lib/unittest/suite.py", line 84 in __call__
  File "/Users/runner/work/cpython/cpython/Lib/unittest/suite.py", line 122 in run
  File "/Users/runner/work/cpython/cpython/Lib/unittest/suite.py", line 84 in __call__
  File "/Users/runner/work/cpython/cpython/Lib/unittest/runner.py", line 184 in run
  File "/Users/runner/work/cpython/cpython/Lib/test/support/__init__.py", line 1850 in _run_suite
  File "/Users/runner/work/cpython/cpython/Lib/test/support/__init__.py", line 1974 in run_unittest
  File "/Users/runner/work/cpython/cpython/Lib/test/libregrtest/runtest.py", line 263 in _test_module
  File "/Users/runner/work/cpython/cpython/Lib/test/libregrtest/runtest.py", line 288 in _runtest_inner2
  File "/Users/runner/work/cpython/cpython/Lib/test/libregrtest/runtest.py", line 326 in _runtest_inner
  File "/Users/runner/work/cpython/cpython/Lib/test/libregrtest/runtest.py", line 217 in _runtest
  File "/Users/runner/work/cpython/cpython/Lib/test/libregrtest/runtest.py", line 247 in runtest
  File "/Users/runner/work/cpython/cpython/Lib/test/libregrtest/main.py", line 334 in rerun_failed_tests
  File "/Users/runner/work/cpython/cpython/Lib/test/libregrtest/main.py", line 716 in _main
  File "/Users/runner/work/cpython/cpython/Lib/test/libregrtest/main.py", line 672 in main
  File "/Users/runner/work/cpython/cpython/Lib/test/libregrtest/main.py", line 733 in main
  File "/Users/runner/work/cpython/cpython/Lib/test/__main__.py", line 2 in <module>
  File "/Users/runner/work/cpython/cpython/Lib/runpy.py", line 87 in _run_code
  File "/Users/runner/work/cpython/cpython/Lib/runpy.py", line 197 in _run_module_as_main
make: *** [buildbottest] Abort trap: 6