RuboCop RSpec v1.10.0

• Fix false negative for RSpec/MessageSpies cop. (@onk)
• Fix internal dependencies on RuboCop to be compatible with 0.47 release. (@backus)
• Add autocorrect support for SingleArgumentMessageChain cop. (@bquorning)
• Rename NestedGroups' configuration key from MaxNesting to Max in order to be consistent with other cop configuration. (@backus)
• Add RepeatedExample cop for detecting repeated examples within example groups. (@backus)
• Add ScatteredSetup cop for enforcing that only one before, around, and after hook are used per example group scope. (@backus)
• Add ExpectOutput cop for recommending expect { ... }.to output(...).to_stdout. (@backus)