Bump base64 from 0.21.5 to 0.22.0 (#1107) #2832

Job	Run time
Documentation	49s
Check (stable)	50s
Clippy	53s
Check (1.70.0)	1m 9s
Cross (aarch64-linux-android)	2m 28s
Format	13s
Cross (aarch64-unknown-linux-gnu)	2m 18s
Cross (aarch64-unknown-linux-musl)	2m 23s
Hack	1m 48s
Lint markdown files	53s
Tests	4m 4s
Tools	2m 18s
Deny (advisories)	22s
Deny (bans licenses sources)	26s
	20m 54s

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