Bump third_party/pigweed/repo from `9e4bfb9` to `34a7853` #568

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1 error and 6 warnings

Process completed with exit code 1.

Failed to save: "/usr/bin/tar" failed with error: The process '/usr/bin/tar' failed with exit code 2

`pre` execution is not supported for local action from './.github/actions/checkout-submodules'

`pre` execution is not supported for local action from './.github/actions/bootstrap-cache'

You are running out of disk space. The runner will stop working when the machine runs out of disk space. Free space left: 18 MB

`pre` execution is not supported for local action from './.github/actions/bootstrap-cache'

`pre` execution is not supported for local action from './.github/actions/checkout-submodules'