[Release Only][pyproject.toml] Also pin torchvision and torchaudio

[huydhn]

T186838701, the CI already build torch and all domain libraries (vision, audio) from scratch using pinned commits, but having torch==2.3 in pyproject.toml overwrites torch installation with 2.3 release.

I think this is a consistent way to fix the issue because:

• Vision and audio are needed in some cases
• Vision and audio need to be compatible with the torch version to work. Assuming that someone install executorch 0.2 which will overwrite their local torch installation, they would also need the corresponding vision and audio. If they have an existing installation of vision/audio around, it would likely fail
• It's a simple fix

The con is that install executorch 0.2 will always install torch, vision, and audio. However, that might not be that bad because that's how the installation instruction on https://pytorch.org/get-started/locally/ says anyway.

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/3787

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❗ 1 Active SEVs

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• Upgrade MacOS runner to 14

❌ 1 New Failure

As of commit b09052f with merge base d3326a2 ():

NEW FAILURE - The following job has failed:

• trunk / test-coreml-delegate / macos-job (gh)
  RuntimeError: Command bash /Users/runner/work/_temp/exec_script failed with exit code 1

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[huydhn]

The issue looks fixed, there is one remaining macOS failure but it seems like another pre-existing failure in the release branch. So, I'll merge this change now.