ci: automated update to rustc 1.90.0 #7670

Job	Run time
Rust fmt	13s
prepare	4s
Check no_std	35s
Build & Test (1.90.0, true, --no-default-features --features miniscript/no-std,bdk_chain/hashbrown)	1m 19s
Build & Test (1.75.0, --no-default-features --features miniscript/no-std,bdk_chain/hashbrown)	1m 19s
Build & Test (1.75.0, --all-features)	1m 19s
Build & Test (1.63.0, --no-default-features --features miniscript/no-std,bdk_chain/hashbrown)	1m 4s
Build & Test (1.63.0, --all-features)	1m 5s
Check WASM	1m 31s
Build & Test (1.90.0, true, --all-features)	1m 19s
Rust clippy	1m 35s
Build & Test Examples (example_bitcoind_rpc_polling)	47s
Build & Test Examples (example_electrum)	1m 0s
Build & Test Examples (example_cli)	43s
Build & Test Examples (example_esplora)	54s
	14m 47s

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