Remove WEBrick from dependency #453

Job	Run time
ruby-versions / Generate Ruby versions	3s
ruby-versions / Generate Ruby versions	3s
test (2.6 / ubuntu-latest)	16s
test (2.6 / ubuntu-latest)	18s
test (2.6 / macos-latest)	17s
test (2.6 / macos-latest)	19s
test (2.7 / ubuntu-latest)	16s
test (2.7 / ubuntu-latest)	15s
test (2.7 / macos-latest)	17s
test (2.7 / macos-latest)	19s
test (3.0 / ubuntu-latest)	18s
test (3.0 / ubuntu-latest)	14s
test (3.0 / macos-latest)	18s
test (3.0 / macos-latest)	17s
test (3.1 / ubuntu-latest)	17s
test (3.1 / ubuntu-latest)	17s
test (3.1 / macos-latest)	16s
test (3.1 / macos-latest)	18s
test (3.2 / ubuntu-latest)	13s
test (3.2 / ubuntu-latest)	13s
test (3.2 / macos-latest)	17s
test (3.2 / macos-latest)	17s
test (3.3 / ubuntu-latest)	13s
test (3.3 / ubuntu-latest)	13s
test (3.3 / macos-latest)	17s
test (3.3 / macos-latest)	16s
test (head / ubuntu-latest)	12s
test (head / ubuntu-latest)	12s
test (head / macos-latest)	17s
test (head / macos-latest)	17s
	7m 35s

Provide feedback