fix(deps): update rust crate objc to 0.2.7 - autoclosed

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
objc	dependencies	patch	0.2 -> 0.2.7

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Release Notes

SSheldon/rust-objc (objc)

v0.2.7

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Fixed

• Uses of msg_send! will now correctly fail to compile if no return type
  can be inferred, instead of relying on an edge case of the compiler
  that will soon change and silently cause undefined behavior.

v0.2.6

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Fixed

• Suppressed a deprecation warning in sel!, msg_send!, and class!.

v0.2.5

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Added

• autoreleasepool returns the value returned by its body closure.

v0.2.4

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Added

• Added an rc module with reference counting utilities:
  StrongPtr, WeakPtr, and autoreleasepool.

• Added some reference counting ABI foreign functions to the runtime module.

Fixed

• Messaging nil under GNUstep now correctly returns zeroed results for all
  return types.

v0.2.3

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Added

• Added a class! macro for getting statically-known classes. The result is
  non-optional (avoiding a need to unwrap) and cached so each usage will only
  look up the class once.

• Added caching to the sel! macro so that each usage will only register the
  selector once.

Fixed

• Fixed the implementation of objc::runtime structs so there can't be unsound
  references to uninhabited types.

v0.2.2

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Added

• Implemented Sync and Send for Sel.

v0.2.1

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Added

• Added support for working with protocols with the Protocol struct.
  The protocols a class conforms to can be examined with the new
  Class::adopted_protocols and Class::conforms_to methods.

• Protocols can be declared using the new ProtocolDecl struct.

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