Bump actions/configure-pages from 4 to 5 #664

Job	Run time
ruby-versions / Generate Ruby versions	3s
test (3.1, ubuntu-latest)	19s
test (3.1, macos-latest)	26s
test (3.1, windows-latest)	1m 40s
test (3.2, ubuntu-latest)	28s
test (3.2, macos-latest)	47s
test (3.2, windows-latest)	1m 59s
test (3.3, ubuntu-latest)	22s
test (3.3, macos-latest)	29s
test (3.3, windows-latest)	3m 8s
test (head, ubuntu-latest)	26s
test (head, macos-latest)	43s
test (head, windows-latest)	1m 23s
test (jruby, ubuntu-latest)	1m 17s
test (jruby, macos-latest)	1m 18s
test (jruby-head, ubuntu-latest)	1m 16s
test (jruby-head, macos-latest)	1m 33s
test (truffleruby, ubuntu-latest)	1m 23s
test (truffleruby, macos-latest)	2m 24s
test (truffleruby-head, ubuntu-latest)	1m 53s
test (truffleruby-head, macos-latest)	2m 24s
	25m 41s

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