'VZVirtualMachineView' has been marked as being introduced in macOS 12.0 here, but the deployment target is macOS 11.0.0

[Code-Hex]

Describe the bug

Get a compilation warning message.

To Reproduce
Steps to reproduce the behavior:

We can see make test

Expected behavior

No warning

Screenshots

go test -exec "go run /Users/runner/work/vz/vz/cmd/codesign" -count=1 ./...
go: downloading golang.org/x/sys v0.0.0-20220808155132-1c4a2a[7](https://github.com/Code-Hex/vz/actions/runs/3247329051/jobs/5327163236#step:4:8)2c664
# github.com/Code-Hex/vz/v2
virtualization_view.m:170:5: warning: 'VZVirtualMachineView' is only available on macOS 12.0 or newer [-Wunguarded-availability-new]
/Applications/Xcode_13.2.1.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/Virtualization.framework/Headers/VZVirtualMachineView.h:23:12: note: 'VZVirtualMachineView' has been marked as being introduced in macOS 12.0 here, but the deployment target is macOS 11.0.0
./virtualization_view.h:25:12: note: annotate 'AppDelegate' with an availability attribute to silence this warning
virtualization_view.m:1[8](https://github.com/Code-Hex/vz/actions/runs/3247329051/jobs/5327163236#step:4:9)4:5: warning: 'VZVirtualMachineView' is only available on macOS 12.0 or newer [-Wunguarded-availability-new]
/Applications/Xcode_13.2.1.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/Virtualization.framework/Headers/VZVirtualMachineView.h:23:12: note: 'VZVirtualMachineView' has been marked as being introduced in macOS 12.0 here, but the deployment target is macOS 11.0.0
virtualization_view.m:184:5: note: enclose 'VZVirtualMachineView' in an @available check to silence this warning
virtualization_view.m:184:37: warning: 'VZVirtualMachineView' is only available on macOS 12.0 or newer [-Wunguarded-availability-new]
/Applications/Xcode_13.2.1.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/Virtualization.framework/Headers/VZVirtualMachineView.h:23:12: note: 'VZVirtualMachineView' has been marked as being introduced in macOS 12.0 here, but the deployment target is macOS [11](https://github.com/Code-Hex/vz/actions/runs/3247329051/jobs/5327163236#step:4:12).0.0
virtualization_view.m:184:37: note: enclose 'VZVirtualMachineView' in an @available check to silence this warning
ok  	github.com/Code-Hex/vz/v2	1.457s
?   	github.com/Code-Hex/vz/v2/cmd/codesign	[no test files]
ok  	github.com/Code-Hex/vz/v2/internal/progress	3.328s

Environment (please complete the following information):

• macOS Version: 11
• Go Version: all