Pin idna_adapter instead of url in MSRV CI task #2188

Job	Run time
Check Style	14s
Android	27s
MSRV	3m 24s
linux / nightly	1m 28s
linux / stable	50s
unstable features	1m 0s
WASM	1m 5s
linux / beta	1m 19s
macOS / stable	1m 44s
windows / stable-x86_64-msvc	4m 47s
windows / stable-i686-msvc	4m 54s
windows / stable-x86_64-gnu	9m 45s
windows / stable-i686-gnu	9m 21s
feat.: default-tls disabled	1m 6s
feat.: rustls-tls	1m 15s
feat.: rustls-tls-manual-roots	57s
feat.: rustls-tls-native-roots	1m 10s
feat.: rustls-tls-no-provider	1m 10s
feat.: native-tls	1m 9s
feat.: default-tls and rustls-tls	1m 17s
feat.: rustls-tls and rustls-tls-no-provider	1m 1s
feat.: cookies	1m 13s
feat.: blocking	1m 21s
feat.: blocking only	1m 12s
feat.: gzip	1m 12s
feat.: brotli	1m 16s
feat.: deflate	1m 7s
feat.: json	1m 11s
feat.: multipart	1m 11s
feat.: stream	59s
feat.: socks/default-tls	59s
feat.: socks/rustls-tls	52s
feat.: hickory-dns	1m 12s
feat.: zstd	1m 0s
Docs	1m 49s
CI is green	1s
	1h 5m 58s

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