Build a single abi3 wheel instead of one per Python version

[NicolasHug]

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[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/vision/9643

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❌ 4 New Failures, 2 Unrelated Failures

As of commit 5ecb785 with merge base ac8d215 ():

NEW FAILURES - The following jobs have failed:

• Tests / unittests-linux (3.10, linux.12xlarge, cpu) / linux-job (gh)
  RuntimeError: Command docker exec -t dcbe05e32aa4208d761f028dc36fafa3515c1659fba1aaaa7e08fc9a2f74e206 /exec failed with exit code 1
• Tests / unittests-linux (3.14, linux.12xlarge, cpu) / linux-job (gh)
  RuntimeError: Command docker exec -t c46fefe2199867d6900071d49cbea359da2a21a6d98ee6dd69857a4daacca589 /exec failed with exit code 1
• Tests / unittests-macos (3.10, macos-m1-stable) / macos-job (gh)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 1
• Tests / unittests-macos (3.14, macos-m1-stable) / macos-job (gh)
  RuntimeError: Command bash /Users/ec2-user/runner/_work/_temp/exec_script failed with exit code 1

FLAKY - The following jobs failed but were likely due to flakiness present on trunk:

• .github/workflows/pr-labels.yml (gh) (similar failure)
• Tests / unittests-windows (3.14, windows.4xlarge, cpu) / windows-job (gh) (detected as infra flaky with no log or failing log classifier)

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