Update multiversion requirement from 0.6.1 to 0.7.1

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Updates the requirements on multiversion to permit the latest version.

Release notes

Sourced from multiversion's releases.

Multiversion 0.7.1

Fixed

• Fixed handling patterns in match_target.

Changelog

Sourced from multiversion's changelog.

[0.7.1] - 2022-12-23

Fixed

• Fixed handling patterns in match_target.

[0.7.0] - 2022-12-09

Changed

• The multiversion macro has been overhauled. Now uses a single attribute macro, rather than helper attributes.
• Increased minimum required Rust version to 1.61.0.

Added

• The function dispatch method is now selectable, between direct or indirect dispatch, as well as compile-time static dispatch.
• Added a variety of macros in the multiversion::target module for querying the selected target features.
• Targets can now be specified by CPU (e.g. x86-64-v2 or skylake).
• Added option to pass attributes to clones.
• Added special targets = "simd" option to automatically target all SIMD instruction sets.

Removed

• Removed the specialize mode. All targets now specify clones. Specialization should be implemented by querying the selected targets.
• Removed support for functions that reference self or Self. Previous support was inconsistent and difficult to use correctly.

Fixed

• Fixed broken impl Trait support. Using impl Trait in return position now results in an error.
• Dispatch is now bypassed in scenarios where no targets are specified for the target architecture, or if the first matching target features are known to exist at compile time.
• Improved performance of direct dispatch.
• Avoid indirect dispatch in some situations, such as when using retpolines

[0.6.1] - 2020-08-18

Fixed

• Fixed disallowing some valid architectures, such as "wasm32"

[0.6.0] - 2020-07-13

Added

• Added are_cpu_features_detected macro.
• Added #[crate_path] helper attribute for renaming/reimporting the crate.

Changed

• Changed runtime_dispatch Cargo feature to std
• Changed static dispatching from the #[static_dispatch] helper attribute to dispatch! helper macro.

[0.5.1] - 2020-05-29

Changed

• Removed dependency on regex and once_cell

Fixed

• Fixed bug where #[multiversion] failed to compile when crate was re-exported or renamed.

[0.5.0] - 2020-04-19

Added

• Support for associated functions (including methods).
• Support for impl Trait.
• Specification for name mangling.
• Documentation for #[safe_inner] helper attribute for #[target].

Removed

• Removed #[target_clones] attribute (functionality is now included in #[multiversion] attribute).

Changed

... (truncated)

Commits

• 1855d95 Fix patterns in match_target
• a68b5df Fix publishing with benchmark
• e26c150 Improve docs
• 5f3f46d Fix formatting
• 1f8135b Update changelog
• ac5fcb8 Add target_cfg_f macro
• 3c682fc Improve docs
• 5ed7a3c Update dependencies and version numbers
• 99ba374 Add match_target macro
• 29d6694 Update examples
• Additional commits viewable in compare view

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