Bump regex from 1.10.3 to 1.10.4 #2844

Job	Run time
Deny (advisories)	24s
Clippy	1m 19s
Deny (bans licenses sources)	27s
Check (stable)	1m 13s
Cross (aarch64-linux-android)	3m 22s
Check (1.70.0)	1m 50s
Cross (aarch64-unknown-linux-gnu)	3m 14s
Documentation	1m 14s
Cross (aarch64-unknown-linux-musl)	3m 12s
Format	24s
Hack	2m 13s
Lint markdown files	43s
Tests	4m 19s
Tools	2m 28s
	26m 22s

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