Update Rubocop

[petems]

• Fixes Insecure Storage Of Cache Files in petems/tugboat (master) #271

[coveralls]

Coverage remained the same at 98.006% when pulling 830f667 on update_rubocop into b11e68f on master.

[coveralls]

Coverage remained the same at 98.006% when pulling 830f667 on update_rubocop into b11e68f on master.

[coveralls]

Coverage increased (+0.003%) to 98.009% when pulling 6db0e4a on update_rubocop into 3c3705a on master.

[coveralls]

Coverage increased (+0.003%) to 98.009% when pulling 173b7ae on update_rubocop into 3c3705a on master.

[coveralls]

Coverage increased (+0.003%) to 98.009% when pulling 173b7ae on update_rubocop into 3c3705a on master.