Bump rexml from 3.3.6 to 3.3.9

Bump rexml from 3.3.3 to 3.3.6

Bump rexml from 3.2.8 to 3.3.3

Bump rake from 13.0.6 to 13.2.1

Bump rspec from 3.12.0 to 3.13.0

Bump rexml from 3.2.5 to 3.2.8

Bump CircleCI dependencies

Bump bundler

Bump dependencies

Bump bundler

Bump slop from 4.10.0 to 4.10.1

Bump slop from 4.9.3 to 4.10.0

Bump simplecov from 0.21.2 to 0.22.0

Bump rspec from 3.11.0 to 3.12.0

Bump slop from 4.9.2 to 4.9.3