ci: automated update to rustc 1.84.0 #6601

Job	Run time
prepare	5s
Check WASM	1m 19s
Check no_std	45s
Build & Test Examples (example_cli)	43s
clippy_check	1m 10s
Rust fmt	15s
Build & Test Examples (example_bitcoind_rpc_polling)	42s
Build and test (1.84.0, true, --no-default-features --features miniscript/no-std)	53s
Build & Test Examples (example_electrum)	1m 0s
Build and test (1.84.0, true, --all-features)	1m 12s
Build & Test Examples (example_esplora)	1m 1s
Build and test (1.63.0, --no-default-features --features miniscript/no-std)	57s
Build & Test Examples (example_wallet_electrum)	56s
Build and test (1.63.0, --all-features)	1m 0s
Build & Test Examples (example_wallet_esplora_async)	1m 4s
Build & Test Examples (example_wallet_esplora_blocking)	1m 0s
Build & Test Examples (example_wallet_rpc)	55s
	14m 57s

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