Update Ruby dependencies

This MR contains the following updates:

Package	Update	Change
builder	patch	'~> 3.2.0' -> '~> 3.2.4'
gitlab-dangerfiles	patch	'~> 3.6.0' -> '~> 3.6.1'
highline	patch	'~> 2.0.0' -> '~> 2.0.3'
nanoc	patch	'~> 4.12.0' -> '~> 4.12.10'
pry-byebug	patch	'~> 3.10.0' -> '~> 3.10.1'
rake	patch	'~> 13.0.0' -> '~> 13.0.6'
rspec-parameterized	patch	'~> 0.5.0' -> '~> 0.5.2'
sass	patch	'3.7.0' -> '3.7.4'
simplecov	patch	'~> 0.21.0' -> '~> 0.21.2'

MR created with the help of gitlab-org/frontend/renovate-gitlab-bot

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