Bump shim

[bigfootjon]

No description provided.

[pytorch-bot]

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🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/16603

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❌ 2 New Failures, 1 Pending

As of commit dd00991 with merge base 9cbe754 ():

NEW FAILURES - The following jobs have failed:

• Build Presets / apple (pybind) / build (gh)
  The process '/opt/homebrew/bin/git' failed with exit code 128
• pull / android / run-emulator (gh)
  The process '/usr/bin/sh' failed with exit code 1

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[Copilot]

Pull request overview

This PR updates the shim submodule reference to a newer commit.

Changes:

• Updated the shim submodule commit hash from cf6a954aae4bee7b4515e13475878460115027d1 to b295819bb0ec636b4e3359828e05476d2437650a

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[GregoryComer]

Approving to unblock.