ssh-key: use release versions of dsa and rsa (#435)

Updates them to the following:
- `dsa` v0.7.0-rc.8
- `rsa` v0.10.0-rc.11

Author: tarcieri

Cargo.lock

@@ -16,9 +16,3 @@ ssh-cipher = { path = "./ssh-cipher" }
 ssh-derive = { path = "./ssh-derive" }
 ssh-encoding = { path = "./ssh-encoding" }
 ssh-key = { path = "./ssh-key" }
-
-crypto-primes = { git = "https://github.com/tarcieri/crypto-primes", branch = "crypto-bigint/v0.7.0-rc.13" }
-curve25519-dalek = { git = "https://github.com/dalek-cryptography/curve25519-dalek" }
-dsa = { git = "https://github.com/RustCrypto/signatures" }
-ed25519-dalek = { git = "https://github.com/dalek-cryptography/curve25519-dalek" }
-rsa = { git = "https://github.com/RustCrypto/RSA" }

Cargo.toml

@@ -28,15 +28,15 @@ zeroize = { version = "1", default-features = false }
 # optional dependencies
 argon2 = { version = "0.6.0-rc.5", optional = true, default-features = false, features = ["alloc"] }
 bcrypt-pbkdf = { version = "0.11.0-rc.2", optional = true, default-features = false, features = ["alloc"] }
-dsa = { version = "0.7.0-rc.7", optional = true, default-features = false, features = ["hazmat"] }
+dsa = { version = "0.7.0-rc.8", optional = true, default-features = false, features = ["hazmat"] }
 ed25519-dalek = { version = "=3.0.0-pre.4", optional = true, default-features = false }
 hex = { version = "0.4", optional = true, default-features = false, features = ["alloc"] }
 hmac = { version = "0.13.0-rc.3", optional = true }
 p256 = { version = "0.14.0-rc.2", optional = true, default-features = false, features = ["ecdsa"] }
 p384 = { version = "0.14.0-rc.2", optional = true, default-features = false, features = ["ecdsa"] }
 p521 = { version = "0.14.0-rc.2", optional = true, default-features = false, features = ["ecdsa"] }
 rand_core = { version = "0.10.0-rc-3", optional = true, default-features = false }
-rsa = { version = "0.10.0-rc.10", optional = true, default-features = false, features = ["sha2"] }
+rsa = { version = "0.10.0-rc.11", optional = true, default-features = false, features = ["sha2"] }
 sec1 = { version = "0.8.0-rc.10", optional = true, default-features = false, features = ["point"] }
 serde = { version = "1.0.16", optional = true }
 sha1 = { version = "0.11.0-rc.3", optional = true, default-features = false, features = ["oid"] }