[Release only] release 2.6 changes

[kit1980]

for i in .github/workflows/*.yml; do sed -i -e s#@main#@release/2.6# $i; done
find . | grep .yml | xargs sed -i "s/test-infra-ref: main/test-infra-ref: release\/2.6/g"

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/audio/3864

• 📄 Preview Python docs built from this PR

Note: Links to docs will display an error until the docs builds have been completed.

❌ 2 New Failures, 1 Cancelled Job, 7 Unrelated Failures

As of commit 2942e76 with merge base a6b0a14 ():

NEW FAILURES - The following jobs have failed:

• Unit-tests on Linux GPU / tests (3.10, 11.8) / linux-job (gh)
  RuntimeError: Command docker exec -t c2de4d5c599b1004da48cfe53cd9eeada1f9ee5f837c5ab92ed7fca9cecb15a9 /exec failed with exit code 2
• Unit-tests on Linux GPU / tests (3.9, 11.8) / linux-job (gh)
  RuntimeError: Command docker exec -t f2bcc78979db957e3ba1089063645c51680ab4481ea0dccf63c6594d66c15cce /exec failed with exit code 2

CANCELLED JOB - The following job was cancelled. Please retry:

• Unit-tests on Linux CPU / tests (3.8) / linux-job (gh)
  ##[error]The operation was canceled.

BROKEN TRUNK - The following jobs failed but were present on the merge base:

👉 Rebase onto the `viable/strict` branch to avoid these failures

• Build Aarch64 Linux Wheels / pytorch/audio / upload / wheel-py3_9-cuda-aarch64cuda-aarch64 (gh) (trunk failure)
  Unable to find an artifact with the name: pytorch_audio__3.9_cu124_aarch64
• Unit-tests on Linux CPU / tests (3.10) / linux-job (gh) (trunk failure)
  ##[error]The operation was canceled.
• Unit-tests on Linux CPU / tests (3.9) / linux-job (gh) (trunk failure)
  ##[error]The operation was canceled.
• Unit-tests on Linux GPU / tests (3.8, 11.8) / linux-job (gh) (trunk failure)
  ##[error]The operation was canceled.
• Unit-tests on Macos CPU / tests / macos-job (gh) (trunk failure)
• Unittests on Windows CPU / unittests-windows-cpu / windows-job (gh) (trunk failure)
  Process completed with exit code 1.
• Unittests on Windows GPU / unittests-windows-gpu / windows-job (gh) (trunk failure)
  Process completed with exit code 1.

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[atalman]

lgtm