return copies lock value: github.com/distribworks/dkron/v4/types.Execution contains google.golang.org/protobuf/internal/impl.MessageState contains sync.Mutex

[BrainGithub]

Describe the bug
https://github.com/distribworks/dkron/blob/main/plugin/execution_processor.go#L50

return copies lock value: github.com/distribworks/dkron/v4/types.Execution contains google.golang.org/protobuf/internal/impl.MessageState contains sync.Mutex

this may result in unnecessary lock contention and concurrency issues.

To Reproduce
compile error

Expected behavior
no compile error

[BrainGithub]

is anyone took this already? I would like to fix this, if not yet.

[vcastellm]

Sure, go ahead @BrainGithub