ci: bump everything to use 3.4 final #1102

Job	Run time
jruby-head	1m 8s
ruby-head (ubuntu, enable)	59s
ruby-head-valgrind (disable)	5m 47s
ruby-head (ubuntu, disable)	48s
ruby-head (windows, enable)	3m 18s
truffleruby-head (--disable-system-libraries --disable-static)	2m 50s
ruby-head (windows, disable)	3m 24s
truffleruby-head (--disable-system-libraries --enable-static)	2m 58s
xmlsoft-head (ubuntu)	1m 57s
ruby-head (macos, enable)	57s
truffleruby-head (--enable-system-libraries)	2m 29s
xmlsoft-head (windows)	9m 21s
xmlsoft-head-valgrind	6m 43s
ruby-head (macos, disable)	35s
xmlsoft-head (macos)	1m 26s
html5lib-tests	57s
	45m 37s

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