Log Message:
cbindgen: update to 0.27.0.

# 0.27.0

      * Revert: The `Config` struct now has a private member.
      * Allow users to specify a crate version for bindings generation (#901).
      * Update MSRV to 1.74 (#912, #987).
      * Support #[deprecated] on enum variants (#933).
      * Support integrating the package_version information in a header file \ 
comment (#939).
      * Add a language backend (#942).
      * Support generics with defaulted args (#959).
      * Add `VaList` compatibility (#970).