Fix 1.63.0 MSRV (#1993) #1526

Job	Run time
Check Style	7s
Docs	2m 23s
linux / nightly	2m 34s
Android	54s
MSRV	6m 16s
linux / stable	1m 59s
unstable features	42s
linux / beta	2m 3s
WASM	1m 6s
macOS / stable	2m 22s
windows / stable-x86_64-msvc	7m 31s
windows / stable-i686-msvc	6m 33s
windows / stable-x86_64-gnu	7m 3s
windows / stable-i686-gnu	7m 9s
feat.: default-tls disabled	1m 48s
feat.: rustls-tls	2m 4s
feat.: rustls-tls-manual-roots	1m 37s
feat.: native-tls	2m 14s
feat.: default-tls and rustls-tls	2m 2s
feat.: cookies	2m 49s
feat.: blocking	2m 37s
feat.: gzip	2m 20s
feat.: brotli	1m 53s
feat.: deflate	1m 50s
feat.: json	2m 2s
feat.: multipart	2m 29s
feat.: stream	2m 2s
feat.: socks/default-tls	2m 18s
feat.: socks/rustls-tls	1m 50s
feat.: trust-dns	2m 13s
CI is green	0s
	1h 22m 50s

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