Merge bitcoindevkit/rust-esplora-client#138: fix(ci): pin dependencie… #1

Job	Run time
Rust Formatting	14s
Rust Clippy	2m 0s
Build & Test (stable, blocking)	2m 28s
Build & Test (stable, blocking-https-rustls)	58s
Build & Test (stable, default)	1m 28s
Build & Test (stable, async)	1m 21s
Build & Test (stable, async-https-native)	1m 20s
Build & Test (stable, async-https)	1m 8s
Build & Test (stable, blocking-https-bundled)	2m 20s
Build & Test (1.63.0, default)	6m 27s
Build & Test (stable, blocking-https)	1m 10s
Build & Test (stable, async-https-rustls)	1m 19s
Build & Test (stable, blocking-https-native)	1m 1s
Build & Test (1.63.0, blocking)	6m 11s
Build & Test (1.63.0, blocking-https-rustls)	6m 3s
Build & Test (1.63.0, blocking-https)	6m 18s
Build & Test (1.63.0, async-https-native)	6m 39s
Build & Test (1.63.0, blocking-https-bundled)	7m 16s
Build & Test (1.63.0, async)	6m 2s
Build & Test (1.63.0, async-https-rustls-manual-roots)	6m 23s
Build & Test (1.63.0, async-https-rustls)	6m 13s
Build & Test (1.63.0, blocking-https-native)	6m 30s
Build & Test (1.63.0, async-https)	6m 13s
Build & Test (stable, async-https-rustls-manual-roots)	1m 33s
	1h 28m 35s

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