Chore(deps): bump cxx from 1.0.49 to 1.0.68

[dependabot]

Bumps cxx from 1.0.49 to 1.0.68.

Release notes

Sourced from cxx's releases.

1.0.68

• Eliminate unused_attributes warning in generated code

1.0.67

• Improvements to the Bazel build rules:
  • Use the default linker on macOS C++ toolchains from Apple (#1029, thanks @​keith)
  • Support Arm target triples on Bazel 5.1+ (#1038, thanks @​snowp)
  • Ensure that cxx and its third-party dependencies are built with the correct edition even if the downstream repo uses a different default one (#1034, #1035, #1040, bazelbuild/rules_rust#1256)

1.0.66

• Support C arrays as struct fields inside types with a handwritten ExternType impl (#1021)

1.0.65

• Update command line argument parser to clap 3.1 (#1016)

1.0.64

• Support #[cfg(debug_assertions)] inside ffi module in Cargo-based builds
• Improve error messages on async fn inside ffi module

1.0.63

• Add support for conditional compilation using #[cfg(...)] attributes inside the bridge module (#989)

    #[cfg(target_os = "android")]
    type CallInvokerHolder;
#[cfg(target_os = "android")]
fn getCallInvoker(self: Pin<&mut CallInvokerHolder>) -> SharedPtr<CallInvoker>;

1.0.62

• Update command line parser to clap 3 (#993)

1.0.61

• Add String::lossy constructors to C++ API, corresponding to from_utf8_lossy and from_utf16_lossy (#984, thanks @​benesch)
• Add Vec<T>::truncate to C++ API (#988, thanks @​benesch)
• Assert sufficient alignment of const char16_t* passed to a rust::String constructor (#992)

1.0.60

• Optimize the Debug and Display impl of CxxString to eliminate memory allocation (#979)
• Prevent handwritten panicking Drop, PartialEq, PartialOrd, or Hash trait impls from causing UB when called from C++ (#980)
• Add support for codebases that choose to opt in to elided_lifetimes_in_paths lint (#907, #981)

1.0.59

• Add clear() member function to rust::Vec<T> in C++ (#951, thanks @​rookboom)

1.0.58

• no_std mode (#969, #970, #971, #972, #973, #974, #975)

... (truncated)

Commits

• d492054 Release 1.0.68
• 7455a97 Lockfile update
• 13cc5d9 Resolve unused_attributes lints in generated code
• af2620c Suppress bad unused_attributes lint on doc(hidden) attr
• 0b878cc Remove doc(hidden) attribute that is being phased out
• 44762a6 Update ui test suite to nightly-2022-04-30
• 21e66f6 Update ui test suite to nightly-2022-04-28
• 5d8f38c Merge pull request #1042 from dtolnay/bazel
• b828c00 Replace half-baked repository_os logic with get_host_triple
• 07b30a5 Pull in newer Bazel rules_rust
• Additional commits viewable in compare view

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