chore(deps): update dependency shellingham to v1.5.4

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
shellingham	==1.3.2 → ==1.5.4

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Release Notes

sarugaku/shellingham (shellingham)

v1.5.4

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Bug Fixes

• Fix a bug that detect_shell() always returns the host shell on MacOS. #&#8203;81 <https://github.com/sarugaku/shellingham/issues/81>_

v1.5.3

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Bug Fixes

• Detect proc format eagerly so it throws the error at the correct location. #&#8203;78 <https://github.com/sarugaku/shellingham/issues/78>_

v1.5.2

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Bug Fixes

• Fixed a regression causing ShellDetectionFailure if /proc is used for process lookup. #&#8203;72 <https://github.com/sarugaku/shellingham/issues/72>_

v1.5.1

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Bug Fixes

• Select the correct status file fields on BSD systems. #&#8203;68 <https://github.com/sarugaku/shellingham/issues/68>_

v1.5.0.post1

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• Fix package metadata to disallow installation on Python prior to 3.7. This was already done in 1.5.0,
  but the metadata of the release was incorrectly set to >=3.4.

v1.5.0

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• Fix package metadata to disallow installation on Python prior to 3.7. This was already done in 1.5.0,
  but the metadata of the release was incorrectly set to >=3.4.

v1.4.0

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Features

• On Windows, the full path to the shell executable is now returned instead of
  just the base name. #&#8203;42 <https://github.com/sarugaku/shellingham/issues/42>_

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