chore(deps): bump ffigen from 20.1.1 to 21.0.0 in the all group

[dependabot]

Bumps the all group with 1 update: ffigen.

Updates ffigen from 20.1.1 to 21.0.0

Release notes

Sourced from ffigen's releases.

package:ffigen v21.0.0

• Propagate @Deprecated annotations from C/ObjC headers into generated Dart bindings. Deprecation messages from __attribute__((deprecated("msg"))) and API_DEPRECATED("msg", ...) are included in the annotation.
• Breaking change: Remove deprecated useDartHandle field from FfiGenerator.
• Breaking change: Remove unused includeSymbolAddress field from Categories, Interfaces, and Protocols.
• Breaking change: Remove deprecated wrapperName field from NativeExternalBindings.
• Breaking change: Certain synthetic USRs have been modified to ensure they cannot collide with real USRs. It's very unlikely that any user facing USRs are affected.
• Enum struct members now have setters.
• Breaking change: Dart const values will be generated for global variables marked const in C (e.g. static const int) instead of symbol lookups. This supports integers, doubles, and string literals. Including the variable name in the globals -> symbol-address configuration will still generate symbol lookups.
• Fix a bug where block helpers were occasionally given unexpected names. Technically a breaking change because if you were affected by the bug, the block helper's name will change to something more sensible.
• Breaking change: Deleted the config option Output.sort. Sorting is now always enabled.
• Fix(dart-lang/native#2877) such that ObjCObject isA now accepts a nullable ObjCObject? and returns false when called with null, aligning its behavior with Dart’s is operator.
• Use xcrun for resolving macOS SDK paths, enabling support for non-standard Xcode installations. #3134
• Add allocate constructor for native C structs: $allocate(Allocator $allocator, {required ...})
• Fix a bug where ObjC classes with SWIFT_UNAVAILABLE annotated init/new methods were generating runtime-crashing no-arg constructors.
• Fix a bug where methods marked with __attribute__((unavailable)) were incorrectly included in bindings when no platform version info was configured.
• Add some more lint ignores to the generated bindings.
• Fix a bug where the config option Protocols.includeTransitive was not working correctly.
• Add compile time version checks to verify consistency of package:objective_c's versions vs FFIgen's generated code.
• Fix a bug where ObjC bindings may not auto-load their dylib in some cases.
• Fix memory leaks, deadlocks, and crashes that can happen in callbacks, if the target isolate is shut down.
• Bump package:meta dependency to ^1.19.0 and stop generating experimental_member_use lint ignore in generated bindings when @RecordUse() is used.

... (truncated)

Commits

• 8e0712b [ffigen][jnigen] Prepare to publish everything! (#3488)
• 3c0121c [jnigen] Map java.lang.Class to JClass (#3492)
• 35b2292 [jnigen] Propagate Javadoc deprecation messages (#3475)
• ef066df [native_toolchain_c] Add longer timeouts to tests (#3491)
• bd55f3c [ffigen] Correctly handle '\r' in generated docs (#3490)
• ed1dad9 [ffigen] Migrate blocks to Dart_PostCObject (#3479)
• 88c353f [hooks_runner] Enforce absolute paths for executables in runProcess (#3480)
• 3168d46 [jni] Migrate to built-in Kotlin (#3477)
• 6132b0d [ffigen] add Node fixture and takeOwnership:false tests (#3478)
• 046f63d [infra] Support latest package_config (#3476)
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