Bump `curve25519-dalek` to v4.0.0-rc.3 (#113) #336

Job	Run time
test (--features ristretto255-ciphersuite, stable)	1m 51s
test (--features ristretto255-ciphersuite, 1.65.0)	3m 47s
test (--features ristretto255-ciphersuite, --features danger, stable)	2m 35s
test (--features ristretto255-ciphersuite, --features danger, 1.65.0)	4m 20s
test (--features ristretto255-ciphersuite, --features serde, stable)	2m 52s
test (--features ristretto255-ciphersuite, --features serde, 1.65.0)	5m 28s
test (stable)	1m 21s
test (1.65.0)	3m 46s
test (--features danger, stable)	3m 13s
test (--features danger, 1.65.0)	4m 36s
test (--features serde, stable)	2m 10s
test (--features serde, 1.65.0)	4m 28s
cargo clippy	30s
Audit	2m 11s
cargo fmt	19s
Build with no-std on wasm32-unknown-unknown	27s
Build with no-std on wasm32-unknown-unknown	19s
Build with no-std on wasm32-unknown-unknown	1m 21s
Build with no-std on wasm32-unknown-unknown	20s
Build with no-std on wasm32-unknown-unknown	43s
Build with no-std on wasm32-unknown-unknown	1m 24s
Build with no-std on thumbv6m-none-eabi	27s
Build with no-std on thumbv6m-none-eabi	17s
Build with no-std on thumbv6m-none-eabi	23s
Build with no-std on thumbv6m-none-eabi	26s
Build with no-std on thumbv6m-none-eabi	18s
Build with no-std on thumbv6m-none-eabi	39s
Taplo	4m 31s
	55m 2s

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