[Release only] Pin test-infra repo for 2.1 release

[huydhn]

This needs to be pin in addition to the action branch

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/vision/8044

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❌ 1 New Failure, 3 Unrelated Failures

As of commit 23094a5 with merge base f1b4c7a ():

NEW FAILURE - The following job has failed:

• CMake / linux (linux.g5.4xlarge.nvidia.gpu, cuda, 11.8) / linux-job (gh)

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

• Tests / unittests-macos (3.8, macos-m1-12) / macos-job (gh)
• Tests / unittests-windows (3.9, windows.4xlarge, cpu) / windows-job (gh)
• Update viable/strict / do_update_viablestrict / do_update_viablestrict (gh)

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[huydhn]

Replace by #8045