chore(deps): update rust crate hipstr to 0.6.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
hipstr	dependencies	minor	0.5.0 -> 0.6.0

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Release Notes

polazarus/hipstr (hipstr)

v0.6.0

Changed

• implement core::error:Error for custom errors, rather than
  std::error::Error and bump msrv

Fixed

• fix doc issue #​28

• fix MIRI check due to provenance loss
  #​32

• fix some new clippy lints (and some future lints)

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