Bump regex from 1.9.4 to 1.9.6 #498

Job	Run time
oxi-test (ruby=2.7, os=ubuntu-latest)	1m 43s
oxi-test (ruby=3.2, os=ubuntu-latest)	1m 31s
oxi-test (ruby=ruby-head, os=ubuntu-latest)	1m 22s
oxi-test (ruby=2.7, os=windows-latest)	9m 34s
oxi-test (ruby=3.2, os=windows-latest)	6m 9s
oxi-test (ruby=ruby-head, os=windows-latest)	6m 6s
oxi-test (ruby=2.7, os=macos-latest)	3m 29s
oxi-test (ruby=3.2, os=macos-latest)	3m 40s
oxi-test (ruby=ruby-head, os=macos-latest)	1m 59s
magnus-0.5 (ruby=2.7, os=ubuntu-latest)	3m 11s
magnus-0.5 (ruby=3.2, os=ubuntu-latest)	2m 9s
magnus-0.5 (ruby=ruby-head, os=ubuntu-latest)	2m 21s
magnus-0.5 (ruby=2.7, os=windows-latest)	13m 14s
magnus-0.5 (ruby=3.2, os=windows-latest)	11m 28s
magnus-0.5 (ruby=2.7, os=macos-latest)	3m 47s
magnus-0.5 (ruby=3.2, os=macos-latest)	2m 53s
magnus-0.5 (ruby=ruby-head, os=macos-latest)	3m 39s
magnus-head (ruby=2.7, os=ubuntu-latest)	3m 40s
magnus-head (ruby=3.2, os=ubuntu-latest)	3m 32s
magnus-head (ruby=ruby-head, os=ubuntu-latest)	4m 21s
magnus-head (ruby=2.7, os=windows-latest)	13m 41s
magnus-head (ruby=3.2, os=windows-latest)	12m 47s
magnus-head (ruby=2.7, os=macos-latest)	4m 0s
magnus-head (ruby=3.2, os=macos-latest)	4m 25s
magnus-head (ruby=ruby-head, os=macos-latest)	3m 39s
	2h 8m 20s

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